dopo l'installazione e aver creato user e pw dll'amministratre andando alla cartella ...backend/admin esce questo errore
Unknown error
Invalid response received: {"result":{"authentication_required":true,"authent icated":false,"features":{"limited_http_methods":f alse,"file_upload":true,"folder_actions":true,"fil e_upload_progress":false,"zip_download":false,"cha nge_password":true,"description_update":true,"perm ission_update":true,"administration":true,"user_gr oups":true,"public_links":false,"mail_notification ":false,"retrieve_url":false,"ldap":false},"plugin s":[],"plugin_base_url":"http:\/\/***********.net\/backend\/plugin\/"}}