400 Bad Request

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

Cannot decode URL parameter filter: ['municipalities%3AAttalens%2Bmunicipalities%3AGranges %28Veveyses%29%2Bperiod_ids%3A41d315b8b9a74f6db3aa54a0ddfb5dfc%2Bvolunteers%3ATrue']