myls

Hi thanks for your answer an the tipp. If I pick the featured Image via the class or any other option wordpress run into this error:
Failed to load page (wp api): === — WP_Error Object ( [errors] => Array ( [http_request_failed] => Array ( [0] => Es wurde keine gültige URL übermittelt. ) ) [error_data] => Array ( ) [additional_data:protected] => Array ( ) )

Dont now what this means.