The facet does not exist

Error: The requested address '/documents/facets?amp%253BclearFacets=1&amp%253BnewFacet=creatorFacet%253DDettwiler%252C+Andr%25C3%25A9as&newFacet=creatorFacet%253DGilli%25C3%25A9ron+Lopreno%252C+Patrick' was not found on this server.