I have just installed the Views Field View Module (https://www.drupal.org/project/views_field_view), which enables to append an existing View as a field inside a View.
But when I want to Append a View field, I get an AJAX error (HTTP 200) :
Une erreur HTTP AJAX s'est produite. Code de statut HTTP : 200 Informations de débogage ci-dessous. Chemin : /admin/structure/views/view/cat_chisme_liste_des_enfants/preview/default/ajax StatusText: OK ResponseText : php_network_getaddresses: getaddrinfo failed: Name or service not known (0) php_network_getaddresses: getaddrinfo failed: Name or service not known (0) php_network_getaddresses: getaddrinfo failed: Name or service not known (0) php_network_getaddresses: getaddrinfo failed: Name or service not known (0) php_network_getaddresses: getaddrinfo failed: Name or service not known (0) php_network_getaddresses: getaddrinfo failed: Name or service not known (0) ... and so on ...
And the field configuration form displayed is not usable.
(Drupal 7.67)