400 Bad Request

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

Cannot decode URL parameter filter: ['available%3Afew%2Bmunicipalities%3ARapperswil%2Bmunicipalities%3ASt%C3%A4fa%2Bperiod_ids%3A47aee87043764f1b9ddce7dca4daa534']