HappyLand

Thank you “kjodle” and “dtlevin”;
My problem has been resolved. It was a strange thing. I had already changed the name of the “wp-content” folder for four websites, For example “wp-config” to “upload” and At the same time, the site has been active for four years.

When I changed my names to the default name and inserted the following commands in the “wp-config” file, the problem was resolved.

define(‘WP_CONTENT_FOLDERNAME’, ‘***NewName***’);
define(‘WP_CONTENT_DIR’, ABSPATH . WP_CONTENT_FOLDERNAME );
define(‘WP_CONTENT_URL’, ‘”***Website-Address***”’.WP_CONTENT_FOLDERNAME);
define(‘WP_PLUGIN_DIR’, WP_CONTENT_DIR . ‘/plugins’ );
define(‘WP_PLUGIN_URL’, WP_CONTENT_URL.’/plugins’);

Best Regards;