400 Bad Request

The server could not comply with the request since it is either malformed or otherwise incorrect.

Cannot decode URL parameter filter: ['durations%3A8%2Bperiod_ids%3A249f9f0d9af341829aab6b7108f8aabb%2Btags%3AProfessions%2Btags%3AScience%2Bweekdays%3A1%2Bvolunteers%3ATrue']