diff --git a/authentik/core/api/applications.py b/authentik/core/api/applications.py
index 68101e799..9506b25fe 100644
--- a/authentik/core/api/applications.py
+++ b/authentik/core/api/applications.py
@@ -58,7 +58,7 @@ class ApplicationSerializer(ModelSerializer):
             user = user._wrapped
         try:
             return url % user.__dict__
-        except ValueError as exc:
+        except (ValueError, TypeError) as exc:
             LOGGER.warning("Failed to format launch url", exc=exc)
             return url