From df362dd9ea6611b4d04d6f2e4e723fc50ad358be Mon Sep 17 00:00:00 2001
From: Jens L <jens@beryju.org>
Date: Mon, 14 Feb 2022 12:02:51 +0100
Subject: [PATCH] core: handle error when formatting launch URL fails closes
 #2304

---
 authentik/core/api/applications.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/authentik/core/api/applications.py b/authentik/core/api/applications.py
index dcbb41017..68101e799 100644
--- a/authentik/core/api/applications.py
+++ b/authentik/core/api/applications.py
@@ -56,7 +56,11 @@ class ApplicationSerializer(ModelSerializer):
         if isinstance(user, SimpleLazyObject):
             user._setup()
             user = user._wrapped
-        return url % user.__dict__
+        try:
+            return url % user.__dict__
+        except ValueError as exc:
+            LOGGER.warning("Failed to format launch url", exc=exc)
+            return url
 
     class Meta: