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%3AChor%2Baktivitat%3AInteressengemeinschaft%2Baktivitat%3ASportf%C3%B6rderung%2Bart%3ASport%2Bart%3AWirtschaft']