Merge pull request #704 from holzman/fix_errmsg_default_profile

Fix error message when default profile is missing options

kubespawner/spawner.py

@@ -3045,7 +3045,7 @@ async def _load_profile(self, slug, selected_profile_user_options):
                     not in profile.get('profile_options').keys()
                 ):
                     raise ValueError(
-                        f'Expected option {user_selected_option_name} for profile {slug}, not found in posted form'
+                        f'Expected option {user_selected_option_name} for profile {profile["slug"]}, not found in posted form'
                     )
 
             # Get selected options or default to the first option if none is passed