skip over invalid / incomplete notes without comment

See e.g.

https://api.openstreetmap.org/api/0.6/notes/3973612.json

which can't even be displayed on the osm.org web frontent

https://www.openstreetmap.org/note/3973612

ocitysmap/indexlib/NotesIndex.py

@@ -89,10 +89,12 @@ class NotesIndex(GeneralIndex):
             lon = note['geometry']['coordinates'][0]
 
             point = Point(lat, lon)
-            
-            index_text = "Note %d - %s" % (n, note['properties']['comments'][0]['text'])
 
-            index_category.items.append(GeneralIndexItem(index_text[0:50], point, point, None))
+            try:
+                index_text = "Note %d - %s" % (n, note['properties']['comments'][0]['text'])
+                index_category.items.append(GeneralIndexItem(index_text[0:50], point, point, None))
+            except IndexError as e:
+                pass
 
             # renderer._marker('red', str(n), lat, lon, ctx, renderer.dpi)
 

ocitysmap/layoutlib/render_plugins/osm_notes/__init__.py

@@ -60,10 +60,11 @@ def render(renderer, ctx):
 
         point = Point(lat, lon)
 
-        index_text = "Note %d - %s" % (n, note['properties']['comments'][0]['text'])
-
-        index_items.append(GeneralIndexItem(index_text[0:50], point, point, None))
-
-        renderer._marker('red', str(n), lat, lon, ctx, renderer.dpi)
+        try:
+            index_text = "Note %d - %s" % (n, note['properties']['comments'][0]['text'])
+            index_items.append(GeneralIndexItem(index_text[0:50], point, point, None))
+            renderer._marker('red', str(n), lat, lon, ctx, renderer.dpi)
+        except IndexError as e:
+            pass
 
 #    renderer.street_index.add_category("OSM Notes", index_items)