500 internal error click "back" to go to explore page (after going to group)

[longshuicy]

See those error in the console:

  File "/Users/cwang138/.local/share/virtualenvs/backend-pkZ6g-7g/lib/python3.9/site-packages/fastapi/routing.py", line 221, in app
    solved_result = await solve_dependencies(
  File "/Users/cwang138/.local/share/virtualenvs/backend-pkZ6g-7g/lib/python3.9/site-packages/fastapi/dependencies/utils.py", line 533, in solve_dependencies
    solved = await call(**sub_values)
  File "/Users/cwang138/Documents/Clowder/clowder2/backend/./app/deps/authorization_deps.py", line 115, in get_role_by_group
    if group.creator == current_user:
AttributeError: 'dict' object has no attribute 'creator'

[tcnichol]

@max-zilla I hope you don't mind I noticed this happening and I pushed a 1 line fix. It just gets creator from group_out instead of group.