127.0.0.1 - - [22/Feb/2019 15:07:52] "GET /viewer/build_filter?selected_groups=&selected_keywords= HTTP/1.1" 500
...
...
File "/home/micha/SIM-PhD-King/gits/simulation_database/simdb/dashboard/app/viewer/routes.py", line 45, in build_filter
grp = api.get_all_groups(session, count=True)
File "/home/micha/SIM-PhD-King/gits/simulation_database/simdb/databaseAPI.py", line 270, in get_all_groups
if len(groups) == 0:
TypeError: object of type 'zip' has no len()
I get the bug