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%3A2%2Bmunicipalities%3ARopraz%2Bmunicipalities%3AOron-la-Ville%2Bperiod_ids%3A249f9f0d9af341829aab6b7108f8aabb%2Bvolunteers%3ATrue']