*: fix formatting

passbook/sources/ldap/tasks.py

@@ -21,7 +21,12 @@ def ldap_sync_all():
 @CELERY_APP.task(bind=True, base=MonitoredTask)
 def ldap_sync(self: MonitoredTask, source_pk: int):
     """Synchronization of an LDAP Source"""
-    source: LDAPSource = LDAPSource.objects.get(pk=source_pk)
+    try:
+        source: LDAPSource = LDAPSource.objects.get(pk=source_pk)
+    except LDAPSource.DoesNotExist:
+        # Because the source couldn't be found, we don't have a UID
+        # to set the state with
+        return
     self.set_uid(slugify(source.name))
     try:
         syncer = LDAPSynchronizer(source)