diff --git a/src/c3nav/editor/forms.py b/src/c3nav/editor/forms.py
index 954a204b..5a5c99d9 100644
--- a/src/c3nav/editor/forms.py
+++ b/src/c3nav/editor/forms.py
@@ -9,14 +9,14 @@ from django.conf import settings
 from django.core.cache import cache
 from django.core.exceptions import FieldDoesNotExist
 from django.core.serializers.json import DjangoJSONEncoder
-from django.db.models import Q, Prefetch
+from django.db.models import Prefetch, Q
 from django.forms import (BooleanField, CharField, ChoiceField, DecimalField, Form, JSONField, ModelChoiceField,
                           ModelForm, MultipleChoiceField, Select, ValidationError)
 from django.forms.widgets import HiddenInput, TextInput
 from django.utils.translation import get_language
 from django.utils.translation import gettext_lazy as _
-from shapely.geometry.geo import mapping
 from pydantic import ValidationError as PydanticValidationError
+from shapely.geometry.geo import mapping
 
 from c3nav.editor.models import ChangeSet, ChangeSetUpdate
 from c3nav.mapdata.fields import GeometryField
@@ -40,12 +40,12 @@ class EditorFormBase(I18nModelFormMixin, ModelForm):
                 obstaclegroup_theme_colors = {}
             else:
                 locationgroup_theme_colors = {
-                    l.location_group_id: l
-                    for l in self.instance.location_groups.filter(theme_id=self.instance.pk)
+                    theme_location_group.location_group_id: theme_location_group
+                    for theme_location_group in self.instance.location_groups.filter(theme_id=self.instance.pk)
                 }
                 obstaclegroup_theme_colors = {
-                    o.obstacle_group_id: o
-                    for o in self.instance.obstacle_groups.filter(theme_id=self.instance.pk)
+                    theme_obstacle.obstacle_group_id: theme_obstacle
+                    for theme_obstacle in self.instance.obstacle_groups.filter(theme_id=self.instance.pk)
                 }
 
             # TODO: can we get the model class via relationships?
@@ -54,23 +54,24 @@ class EditorFormBase(I18nModelFormMixin, ModelForm):
                 related = locationgroup_theme_colors.get(locationgroup.pk, None)
                 value = related.fill_color if related is not None else None
                 other_themes_colors = {
-                    l.title: l.fill_color
-                    for l in locationgroup.theme_colors.all()
-                    if related is None or l.pk != related.pk
+                    theme_location_group.title: theme_location_group.fill_color
+                    for theme_location_group in locationgroup.theme_colors.all()
+                    if related is None or theme_location_group.pk != related.pk
                 }
                 if len(other_themes_colors) > 0:
                     other_themes_colors = json.dumps(other_themes_colors)
                 else:
                     other_themes_colors = False
-                field = CharField(max_length=32,
-                              label=locationgroup.title,
-                              required=False,
-                              initial=value,
-                              widget=TextInput(attrs={
-                                  'data-themed-color': True,
-                                  'data-color-base-theme': locationgroup.color if locationgroup.color else False,
-                                  'data-colors-other-themes': other_themes_colors,
-                              }))
+                field = CharField(
+                    max_length=32,
+                    label=locationgroup.title,
+                    required=False,
+                    initial=value,
+                    widget=TextInput(attrs={
+                        'data-themed-color': True,
+                        'data-color-base-theme': locationgroup.color if locationgroup.color else False,
+                        'data-colors-other-themes': other_themes_colors,
+                    }))
                 self.fields[f'locationgroup_{locationgroup.pk}'] = field
 
             for obstaclegroup in ObstacleGroup.objects.prefetch_related(
@@ -375,7 +376,8 @@ class EditorFormBase(I18nModelFormMixin, ModelForm):
                     self.instance.groups.set(groups)
 
         if self._meta.model.__name__ == 'Theme':
-            locationgroup_colors = {l.location_group_id: l for l in self.instance.location_groups.all()}
+            locationgroup_colors = {theme_location_group.location_group_id: theme_location_group
+                                    for theme_location_group in self.instance.location_groups.all()}
             for locationgroup in LocationGroup.objects.all():
                 value = self.cleaned_data[f'locationgroup_{locationgroup.pk}']
                 if value:
diff --git a/src/c3nav/mapdata/fields.py b/src/c3nav/mapdata/fields.py
index 30147868..8023436a 100644
--- a/src/c3nav/mapdata/fields.py
+++ b/src/c3nav/mapdata/fields.py
@@ -87,8 +87,10 @@ class GeometryField(models.JSONField):
     def _validate_geomtype(self, value, exception: typing.Type[Exception] = ValidationError):
         if not isinstance(value, self.classes):
             # if you get this error with wrappedgeometry, looked into wrapped_geom
-            raise exception('Expected %s instance, got %s instead.' % (' or '.join(c.__name__ for c in self.classes),
-                                                                       repr(value)))
+            raise TypeError('Expected %s instance, got %s, %s instead.' % (
+                ' or '.join(c.__name__ for c in self.classes),
+                repr(value), value.wrapped_geom
+            ))
 
     def get_final_value(self, value, as_json=False):
         json_value = format_geojson(mapping(value))
diff --git a/src/c3nav/mapdata/management/commands/importhub.py b/src/c3nav/mapdata/management/commands/importhub.py
index 909a3349..b3303abd 100644
--- a/src/c3nav/mapdata/management/commands/importhub.py
+++ b/src/c3nav/mapdata/management/commands/importhub.py
@@ -1,17 +1,15 @@
 import hashlib
-import json
 from uuid import UUID
 
 import requests
 from django.conf import settings
 from django.core.management.base import BaseCommand
-from pydantic import Field, BaseModel
-from pydantic import PositiveInt
+from pydantic import BaseModel, Field, PositiveInt
 from shapely import Point
 from shapely.geometry import shape
 
 from c3nav.api.utils import NonEmptyStr
-from c3nav.mapdata.models import Area, Space, LocationGroup, LocationSlug, MapUpdate
+from c3nav.mapdata.models import Area, LocationGroup, LocationSlug, MapUpdate, Space
 from c3nav.mapdata.models.geometry.space import POI
 from c3nav.mapdata.models.report import Report
 from c3nav.mapdata.utils.cache.changes import changed_geometries
@@ -189,7 +187,7 @@ class Command(BaseCommand):
 
             if result.geometry != new_geometry or True:
                 if result.import_block_geom:
-                    geometry_needs_change.append(f"change geometry")
+                    geometry_needs_change.append("change geometry")
                     print(f"NOTE: {item.slug} / {item.id} geometry has changed but is blocked")
                 else:
                     result.geometry = new_geometry
@@ -198,7 +196,7 @@ class Command(BaseCommand):
                 new_main_point = Point(item.location) if item.location else None
                 if result.main_point != new_main_point:
                     if result.import_block_geom:
-                        geometry_needs_change.append(f"change main point")
+                        geometry_needs_change.append("change main point")
                         print(f"NOTE: {item.slug} / {item.id} main point has changed but is blocked")
                     else:
                         result.main_point = new_main_point
@@ -210,8 +208,8 @@ class Command(BaseCommand):
                     obj=item,
                     report=Report(
                         category="location-issue",
-                        title=f"importhub: geometry is blocked but needs changing",
-                        description=f"changes needed: "+','.join(geometry_needs_change),
+                        title="importhub: geometry is blocked but needs changing",
+                        description="changes needed: "+','.join(geometry_needs_change),
                         location=result,
                     )
                 )
@@ -278,8 +276,8 @@ class Command(BaseCommand):
                     obj=item,
                     report=Report(
                         category="location-issue",
-                        title=f"importhub: data is blocked but needs changing",
-                        description=f"changes needed: "+','.join(data_needs_change),
+                        title="importhub: data is blocked but needs changing",
+                        description="changes needed: "+','.join(data_needs_change),
                         location=result,
                     )
                 )
@@ -299,8 +297,8 @@ class Command(BaseCommand):
                         obj=item,
                         report=Report(
                             category="location-issue",
-                            title=f"importhub: location no longer has any valid group ids",
-                            description=f"from the hub we would remove all groups, this seems wrong",
+                            title="importhub: location no longer has any valid group ids",
+                            description="from the hub we would remove all groups, this seems wrong",
                             location=result,
                         )
                     )
@@ -326,8 +324,8 @@ class Command(BaseCommand):
                         obj=item,
                         report=Report(
                             category="location-issue",
-                            title=f"importhub: new groups",
-                            description=(f"hub wants new groups for this, groups are now: " +
+                            title="importhub: new groups",
+                            description=("hub wants new groups for this, groups are now: " +
                                          str([group.title for group in new_groups])),
                             location=result,
                         )
@@ -343,10 +341,9 @@ class Command(BaseCommand):
                 obj=import_tag,
                 report=Report(
                     category="location-issue",
-                    title=f"importhub: delete this",
-                    description=f"hub wants to delete this",
+                    title="importhub: delete this",
+                    description="hub wants to delete this",
                     location=location,
                 )
             )
             print(f"NOTE: {location.slug} / {import_tag} should be deleted")
-
diff --git a/src/c3nav/mapdata/models/geometry/space.py b/src/c3nav/mapdata/models/geometry/space.py
index 127da3d7..4fd7a446 100644
--- a/src/c3nav/mapdata/models/geometry/space.py
+++ b/src/c3nav/mapdata/models/geometry/space.py
@@ -1,3 +1,4 @@
+import typing
 from decimal import Decimal
 
 from django.conf import settings
@@ -21,6 +22,9 @@ from c3nav.mapdata.utils.cache.changes import changed_geometries
 from c3nav.mapdata.utils.geometry import unwrap_geom
 from c3nav.mapdata.utils.json import format_geojson
 
+if typing.TYPE_CHECKING:
+    from c3nav.mapdata.render.theme import ThemeColorManager
+
 
 class SpaceGeometryMixin(GeometryMixin):
     space = models.ForeignKey('mapdata.Space', on_delete=models.CASCADE, verbose_name=_('space'))
@@ -240,7 +244,11 @@ class Obstacle(SpaceGeometryMixin, models.Model):
     def get_color(self, color_manager: 'ThemeColorManager', instance=None):
         if instance is None:
             instance = self
-        return color_manager.obstaclegroup_fill_color(instance.group) if instance.group is not None else color_manager.obstacles_default_fill
+        return (
+            color_manager.obstaclegroup_fill_color(instance.group)
+            if instance.group is not None
+            else color_manager.obstacles_default_fill
+        )
 
 
 class LineObstacle(SpaceGeometryMixin, models.Model):
@@ -284,7 +292,11 @@ class LineObstacle(SpaceGeometryMixin, models.Model):
         if instance is None:
             instance = self
         # TODO: should line obstacles use border color?
-        return color_manager.obstaclegroup_fill_color(instance.group) if instance.group is not None else color_manager.obstacles_default_fill
+        return (
+            color_manager.obstaclegroup_fill_color(instance.group)
+            if instance.group is not None
+            else color_manager.obstacles_default_fill
+        )
 
     @property
     def buffered_geometry(self):
diff --git a/src/c3nav/mapdata/models/locations.py b/src/c3nav/mapdata/models/locations.py
index b2576e43..3d234f5e 100644
--- a/src/c3nav/mapdata/models/locations.py
+++ b/src/c3nav/mapdata/models/locations.py
@@ -1,4 +1,5 @@
 import string
+import typing
 from contextlib import suppress
 from datetime import timedelta
 from decimal import Decimal
@@ -25,6 +26,9 @@ from c3nav.mapdata.models.base import SerializableMixin, TitledMixin
 from c3nav.mapdata.utils.fields import LocationById
 from c3nav.mapdata.utils.models import get_submodels
 
+if typing.TYPE_CHECKING:
+    from c3nav.mapdata.render.theme import ThemeColorManager
+
 
 class LocationSlugManager(models.Manager):
     def get_queryset(self):
diff --git a/src/c3nav/mapdata/models/theme.py b/src/c3nav/mapdata/models/theme.py
index a3e7cf46..9f9d276a 100644
--- a/src/c3nav/mapdata/models/theme.py
+++ b/src/c3nav/mapdata/models/theme.py
@@ -54,6 +54,7 @@ class ThemeObstacleGroupBackgroundColor(models.Model):
     A background color for an ObstacleGroup in a theme
     """
     theme = models.ForeignKey(Theme, on_delete=models.CASCADE, related_name="obstacle_groups")
-    obstacle_group = models.ForeignKey(ObstacleGroup, on_delete=models.SET_NULL, null=True, blank=True, related_name="theme_colors")
+    obstacle_group = models.ForeignKey(ObstacleGroup, on_delete=models.SET_NULL, null=True, blank=True,
+                                       related_name="theme_colors")
     fill_color = models.CharField(max_length=32, null=True, blank=True)
     border_color = models.CharField(max_length=32, null=True, blank=True)
diff --git a/src/c3nav/mapdata/render/geometry/hybrid.py b/src/c3nav/mapdata/render/geometry/hybrid.py
index 932c71e5..eec11497 100644
--- a/src/c3nav/mapdata/render/geometry/hybrid.py
+++ b/src/c3nav/mapdata/render/geometry/hybrid.py
@@ -6,8 +6,7 @@ from itertools import chain
 from typing import Literal, TypeVar
 
 import numpy as np
-from matplotlib.patches import Polygon
-from shapely.geometry import GeometryCollection, LineString, MultiLineString, MultiPolygon, Point
+from shapely.geometry import GeometryCollection, LineString, MultiLineString, MultiPolygon, Point, Polygon
 from shapely.geometry.base import BaseGeometry
 from shapely.ops import unary_union
 
diff --git a/src/c3nav/mapdata/render/geometry/level.py b/src/c3nav/mapdata/render/geometry/level.py
index 7f19e8dc..7d69062f 100644
--- a/src/c3nav/mapdata/render/geometry/level.py
+++ b/src/c3nav/mapdata/render/geometry/level.py
@@ -1,4 +1,5 @@
 import operator
+import typing
 from collections import Counter, deque
 from functools import reduce
 from itertools import chain
@@ -15,6 +16,9 @@ from c3nav.mapdata.utils.cache import AccessRestrictionAffected
 from c3nav.mapdata.utils.geometry import get_rings, unwrap_geom
 from c3nav.mapdata.utils.mesh import triangulate_rings
 
+if typing.TYPE_CHECKING:
+    from c3nav.mapdata.render.theme import ThemeColorManager
+
 empty_geometry_collection = GeometryCollection()
 
 
@@ -136,7 +140,9 @@ class LevelGeometries:
                 area.geometry = area.geometry.intersection(unwrap_geom(space.walkable_geom))
                 if access_restriction is not None:
                     access_restriction_affected.setdefault(access_restriction, []).append(area.geometry)
-                colors.setdefault(area.get_color_sorted(color_manager), {}).setdefault(access_restriction, []).append(area.geometry)
+                colors.setdefault(
+                    area.get_color_sorted(color_manager), {}
+                ).setdefault(access_restriction, []).append(area.geometry)
 
             for column in space.columns.all():
                 access_restriction = column.access_restriction_id
@@ -162,7 +168,9 @@ class LevelGeometries:
             for lineobstacle in space.lineobstacles.all():
                 if not lineobstacle.height:
                     continue
-                obstacles.setdefault(int(lineobstacle.height*1000), {}).setdefault(lineobstacle.get_color(color_manager), []).append(
+                obstacles.setdefault(int(lineobstacle.height*1000), {}).setdefault(
+                    lineobstacle.get_color(color_manager), []
+                ).append(
                     lineobstacle.buffered_geometry.intersection(unwrap_geom(space.walkable_geom))
                 )
 
diff --git a/src/c3nav/mapdata/render/renderdata.py b/src/c3nav/mapdata/render/renderdata.py
index 5108ce87..930c726c 100644
--- a/src/c3nav/mapdata/render/renderdata.py
+++ b/src/c3nav/mapdata/render/renderdata.py
@@ -85,7 +85,9 @@ class LevelRenderData:
             altitudeareas_above = []  # todo: typing
             for render_level in reversed(levels):
                 # build level geometry for every single level
-                single_level_geoms[render_level.pk] = LevelGeometries.build_for_level(render_level, color_manager, altitudeareas_above)
+                single_level_geoms[render_level.pk] = LevelGeometries.build_for_level(
+                    render_level, color_manager, altitudeareas_above
+                )
 
                 # ignore intermediate levels in this pass
                 if render_level.on_top_of_id is not None:
diff --git a/src/c3nav/mapdata/render/renderer.py b/src/c3nav/mapdata/render/renderer.py
index 824af50f..d5dc156e 100644
--- a/src/c3nav/mapdata/render/renderer.py
+++ b/src/c3nav/mapdata/render/renderer.py
@@ -11,7 +11,6 @@ from c3nav.mapdata.render.utils import get_full_levels, get_min_altitude
 from c3nav.mapdata.utils.color import color_to_rgb, rgb_to_color
 
 
-
 class MapRenderer:
     def __init__(self, level, minx, miny, maxx, maxy, scale=1, access_permissions=None, full_levels=False,
                  min_width=None):
diff --git a/src/c3nav/mapdata/render/theme.py b/src/c3nav/mapdata/render/theme.py
index 6c28c59e..76c38c16 100644
--- a/src/c3nav/mapdata/render/theme.py
+++ b/src/c3nav/mapdata/render/theme.py
@@ -24,13 +24,13 @@ class ThemeColorManager:
             self.obstacles_default_border = RENDER_COLOR_OBSTACLES_DEFAULT_BORDER
             self.location_group_border_colors = {}
             self.location_group_fill_colors = {
-                l.pk: l.color
-                for l in LocationGroup.objects.filter(color__isnull=False).all()
+                location_group.pk: location_group.color
+                for location_group in LocationGroup.objects.filter(color__isnull=False).all()
             }
             self.obstacle_group_border_colors = {}
             self.obstacle_group_fill_colors = {
-                o.pk: o.color
-                for o in ObstacleGroup.objects.filter(color__isnull=False).all()
+                obstacle_group.pk: obstacle_group.color
+                for obstacle_group in ObstacleGroup.objects.filter(color__isnull=False).all()
             }
         else:
             self.background = theme.color_background
@@ -41,20 +41,20 @@ class ThemeColorManager:
             self.obstacles_default_fill = theme.color_obstacles_default_fill
             self.obstacles_default_border = theme.color_obstacles_default_border
             self.location_group_border_colors = {
-                l.location_group_id: l.border_color
-                for l in theme.location_groups.all()
+                theme_location_group.location_group_id: theme_location_group.border_color
+                for theme_location_group in theme.location_groups.all()
             }
             self.location_group_fill_colors = {
-                l.location_group_id: l.fill_color
-                for l in theme.location_groups.all()
+                theme_location_group.location_group_id: theme_location_group.fill_color
+                for theme_location_group in theme.location_groups.all()
             }
             self.obstacle_group_border_colors = {
-                o.obstacle_group_id: o.border_color
-                for o in theme.obstacle_groups.all()
+                theme_obstacle_group.obstacle_group_id: theme_obstacle_group.border_color
+                for theme_obstacle_group in theme.obstacle_groups.all()
             }
             self.obstacle_group_fill_colors = {
-                o.obstacle_group_id: o.fill_color
-                for o in theme.obstacle_groups.all()
+                theme_obstacle.obstacle_group_id: theme_obstacle.fill_color
+                for theme_obstacle in theme.obstacle_groups.all()
             }
 
     def locationgroup_border_color(self, location_group: LocationGroup):
diff --git a/src/c3nav/mapdata/urls.py b/src/c3nav/mapdata/urls.py
index ecd8ecea..ccd08090 100644
--- a/src/c3nav/mapdata/urls.py
+++ b/src/c3nav/mapdata/urls.py
@@ -2,7 +2,7 @@ from django.urls import path, register_converter
 
 from c3nav.mapdata.converters import (AccessPermissionsConverter, ArchiveFileExtConverter, HistoryFileExtConverter,
                                       HistoryModeConverter, SignedIntConverter)
-from c3nav.mapdata.views import get_cache_package, map_history, tile, preview_location, preview_route
+from c3nav.mapdata.views import get_cache_package, map_history, preview_location, preview_route, tile
 from c3nav.site.converters import LocationConverter
 
 register_converter(LocationConverter, 'loc')
@@ -16,7 +16,8 @@ urlpatterns = [
     path('<int:level>/<sint:zoom>/<sint:x>/<sint:y>/<int:theme>.png', tile, name='mapdata.tile'),
     path('preview/l/<loc:slug>.png', preview_location, name='mapdata.preview.location'),
     path('preview/r/<loc:slug>/<loc:slug2>.png', preview_route, name='mapdata.preview.route'),
-    path('<int:level>/<sint:zoom>/<sint:x>/<sint:y>/<int:theme>/<a_perms:access_permissions>.png', tile, name='mapdata.tile'),
+    path('<int:level>/<sint:zoom>/<sint:x>/<sint:y>/<int:theme>/<a_perms:access_permissions>.png', tile,
+         name='mapdata.tile'),
     path('history/<int:level>/<h_mode:mode>.<h_fileext:filetype>', map_history, name='mapdata.map_history'),
     path('cache/package.<archive_fileext:filetype>', get_cache_package, name='mapdata.cache_package'),
 ]
diff --git a/src/c3nav/mapdata/utils/tiles.py b/src/c3nav/mapdata/utils/tiles.py
index e8873ea0..f09e7b03 100644
--- a/src/c3nav/mapdata/utils/tiles.py
+++ b/src/c3nav/mapdata/utils/tiles.py
@@ -51,5 +51,6 @@ def build_access_cache_key(access_permissions: set):
 def build_tile_etag(level_id, zoom, x, y, theme_id, base_cache_key, access_cache_key, tile_secret):
     # we want a short etag so HTTP 304 responses are tiny
     return '"' + binascii.b2a_base64(hashlib.sha256(
-        ('%d-%d-%d-%d:%s:%s:%s:%s' % (level_id, zoom, x, y, str(theme_id), base_cache_key, access_cache_key, tile_secret[:26])).encode()
+        ('%d-%d-%d-%d:%s:%s:%s:%s' %
+         (level_id, zoom, x, y, str(theme_id), base_cache_key, access_cache_key, tile_secret[:26])).encode()
     ).digest()[:15], newline=False).decode() + '"'
diff --git a/src/c3nav/mapdata/views.py b/src/c3nav/mapdata/views.py
index a96eb36e..9e5e5f39 100644
--- a/src/c3nav/mapdata/views.py
+++ b/src/c3nav/mapdata/views.py
@@ -12,7 +12,7 @@ from django.http import Http404, HttpResponse, HttpResponseNotModified, Streamin
 from django.shortcuts import get_object_or_404
 from django.utils.http import content_disposition_header
 from django.views.decorators.http import etag
-from shapely import Point, box, LineString, unary_union
+from shapely import LineString, Point, box, unary_union
 
 from c3nav.mapdata.middleware import no_language
 from c3nav.mapdata.models import Level, MapUpdate
@@ -345,7 +345,7 @@ def tile(request, level, zoom, x, y, theme, access_permissions: Optional[set] =
     if not cache_package.bounds_valid(minx, miny, maxx, maxy):
         raise Http404
 
-    theme = None if theme is 0 else int(theme)
+    theme = None if theme == 0 else int(theme)
     theme_key = str(theme)
 
     # get level
@@ -372,7 +372,8 @@ def tile(request, level, zoom, x, y, theme, access_permissions: Optional[set] =
     access_cache_key = build_access_cache_key(access_permissions)
 
     # check browser cache
-    tile_etag = build_tile_etag(level, zoom, x, y, theme_key, base_cache_key, access_cache_key, settings.SECRET_TILE_KEY)
+    tile_etag = build_tile_etag(level, zoom, x, y, theme_key, base_cache_key, access_cache_key,
+                                settings.SECRET_TILE_KEY)
     if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
     if if_none_match == tile_etag:
         return HttpResponseNotModified()
diff --git a/src/c3nav/routing/api/routing.py b/src/c3nav/routing/api/routing.py
index 303c8b91..03b82312 100644
--- a/src/c3nav/routing/api/routing.py
+++ b/src/c3nav/routing/api/routing.py
@@ -1,5 +1,5 @@
 from enum import StrEnum
-from typing import Annotated, Optional, Union, Any
+from typing import Annotated, Any, Optional, Union
 
 from django.core.exceptions import ValidationError
 from django.urls import reverse
diff --git a/src/c3nav/settings.py b/src/c3nav/settings.py
index b135adcb..345523da 100644
--- a/src/c3nav/settings.py
+++ b/src/c3nav/settings.py
@@ -361,7 +361,7 @@ MIDDLEWARE = [
     'c3nav.mapdata.middleware.UserDataMiddleware',
     'c3nav.site.middleware.MobileclientMiddleware',
     'c3nav.control.middleware.UserPermissionsMiddleware',
-    #'c3nav.api.middleware.JsonRequestBodyMiddleware',  # might still be needed in editor
+    # 'c3nav.api.middleware.JsonRequestBodyMiddleware',  # might still be needed in editor
 ]
 
 with suppress(ImportError):
diff --git a/src/c3nav/site/urls.py b/src/c3nav/site/urls.py
index 2352327a..d095fe28 100644
--- a/src/c3nav/site/urls.py
+++ b/src/c3nav/site/urls.py
@@ -2,7 +2,7 @@ from itertools import chain
 
 from django.urls import path, register_converter
 
-from c3nav.site.converters import AtPositionConverter, CoordinatesConverter, IsEmbedConverter, LocationConverter
+from c3nav.site.converters import AtPositionConverter, CoordinatesConverter, IsEmbedConverter
 from c3nav.site.views import (about_view, access_redeem_view, account_manage, account_view, api_secret_create,
                               api_secret_list, change_password_view, choose_language, delete_account_view, login_view,
                               logout_view, map_index, position_create, position_detail, position_list, position_set,
@@ -18,13 +18,15 @@ pos = '<at_pos:pos>'
 
 def index_paths(pre, suf):
     return [
-        path(f'{pre}l/<loc:slug>/{suf}', map_index, {'mode': 'l', 'details': False, 'nearby': False}, name='site.index', ),
+        path(f'{pre}l/<loc:slug>/{suf}', map_index, {'mode': 'l', 'details': False, 'nearby': False},
+             name='site.index'),
         path(f'{pre}l/<loc:slug>/details/{suf}', map_index, {'mode': 'l', 'details': True}, name='site.index'),
         path(f'{pre}l/<loc:slug>/nearby/{suf}', map_index, {'mode': 'l', 'nearby': True}, name='site.index'),
         path(f'{pre}o/<loc:slug>/{suf}', map_index, {'mode': 'o'}, name='site.index'),
         path(f'{pre}d/<loc:slug>/{suf}', map_index, {'mode': 'd'}, name='site.index'),
         path(f'{pre}r/{suf}', map_index, {'mode': 'r'}, name='site.index'),
-        path(f'{pre}r/<loc:slug>/<loc:slug2>/{suf}', map_index, {'mode': 'r', 'details': False, 'options': False}, name='site.index'),
+        path(f'{pre}r/<loc:slug>/<loc:slug2>/{suf}', map_index, {'mode': 'r', 'details': False, 'options': False},
+             name='site.index'),
         path(f'{pre}r/<loc:slug>/<loc:slug2>/details/{suf}', map_index, {'mode': 'r', 'details': True},
              name='site.index'),
         path(f'{pre}r/<loc:slug>/<loc:slug2>/options/{suf}', map_index, {'mode': 'r', 'options': True},
diff --git a/src/c3nav/site/views.py b/src/c3nav/site/views.py
index ac801d53..ae04289a 100644
--- a/src/c3nav/site/views.py
+++ b/src/c3nav/site/views.py
@@ -29,7 +29,7 @@ from c3nav import __version__ as c3nav_version
 from c3nav.api.models import Secret
 from c3nav.mapdata.grid import grid
 from c3nav.mapdata.models import Location, Source
-from c3nav.mapdata.models.access import AccessPermissionToken, AccessPermission
+from c3nav.mapdata.models.access import AccessPermission, AccessPermissionToken
 from c3nav.mapdata.models.locations import LocationRedirect, Position, SpecificLocation, get_position_secret
 from c3nav.mapdata.models.report import Report, ReportUpdate
 from c3nav.mapdata.utils.locations import (get_location_by_id_for_request, get_location_by_slug_for_request,
diff --git a/src/c3nav/tileserver/wsgi.py b/src/c3nav/tileserver/wsgi.py
index 38c82789..ced8cccf 100644
--- a/src/c3nav/tileserver/wsgi.py
+++ b/src/c3nav/tileserver/wsgi.py
@@ -188,7 +188,7 @@ class TileServer:
         error = False
         try:
             last_check = self.cache.get('cache_package_last_successful_check')
-        except pylibmc.Error as e:
+        except pylibmc.Error:
             error = True
             text = b'memcached error'
         else:
@@ -199,8 +199,8 @@ class TileServer:
                 else:
                     text = b'last successful cache package check is unknown'
         start_response(('500' if error else '200') + ' OK', [self.get_date_header(),
-                                  ('Content-Type', 'text/plain'),
-                                  ('Content-Length', str(len(text)))])
+                                                             ('Content-Type', 'text/plain'),
+                                                             ('Content-Length', str(len(text)))])
         return [text]
 
     def get_cache_package(self):
@@ -300,7 +300,8 @@ class TileServer:
         if cached_result is not None:
             return self.deliver_tile(start_response, tile_etag, cached_result)
 
-        r = requests.get('%s/map/%d/%d/%d/%d/%d/%s.png' % (self.upstream_base, level, zoom, x, y, theme_id, access_cache_key),
+        r = requests.get('%s/map/%d/%d/%d/%d/%d/%s.png' %
+                         (self.upstream_base, level, zoom, x, y, theme_id, access_cache_key),
                          headers=self.auth_headers, auth=self.http_auth)
 
         if r.status_code == 200 and r.headers['Content-Type'] == 'image/png':