Warning: require_once(./y_document_sablon/document_sablon_functions.php): failed to open stream: No such file or directory in /var/www/html/project_r/actual_prg/system/y_document_sablon/AJAX_Response.php on line 5

Fatal error: require_once(): Failed opening required './y_document_sablon/document_sablon_functions.php' (include_path='.:/usr/local/lib/php') in /var/www/html/project_r/actual_prg/system/y_document_sablon/AJAX_Response.php on line 5