400 Bad Request

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

Cannot decode URL parameter keywords: ['aktivitat%3AWakeboarding%2Baktivitat%3AFutsal%2Baktivitat%3ATurnen%2Baktivitat%3AQuartierverein%2Bart%3ABrauchtum%2Bart%3ASprachf%C3%B6rderung']