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%3A4%2Bperiod_ids%3A173e5858960b495f9f72fa02578f2f99%2Bweekdays%3A2%2Bweekdays%3A3%2Bvolunteers%3ATrue']