400 Bad Request

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

Cannot decode URL parameter keywords: ['kategorie_themen%3AStoffe%2Bkategorie_themen%3AWald%2Bkategorie_themen%3AJagd%2C Fischerei%2Bkategorie_themen%3AWassernutzung und Gew%C3%A4sserschutz%2Bkategorie_themen%3ANeobiota']