Merge branch '872-about-page-fails-to-load-if-app-with-unkown-licence-is-installed' into 'master'

Resolve "About page fails to load if app with unkown licence is installed"

Closes #872

See merge request !1271

CHANGELOG.rst

@@ -13,6 +13,7 @@ Fixed
 ~~~~~
 
 * Progress page didn't work properly.
+* About page failed to load for apps with an unknown licence.
 
 `3.1`_ - 2022-05-30
 -------------------

aleksis/core/util/apps.py

@@ -87,6 +87,10 @@ class AppConfig(django.apps.AppConfig):
         # Get string representation of licence in SPDX format
         licence = getattr(cls, "licence", None)
 
+        default_flags = {
+            "isFsfLibre": False,
+            "isOsiApproved": False,
+        }
         default_dict = {
             "isDeprecatedLicenseId": False,
             "isFsfLibre": False,
@@ -131,7 +135,7 @@ class AppConfig(django.apps.AppConfig):
             return (readable, flags, licence_dicts)
         else:
             # We could not find a valid licence
-            return ("Unknown", [default_dict])
+            return ("Unknown", default_flags, [default_dict])
 
     @classmethod
     def get_licence_dict(cls):