Hello,
since the last WP update, many dev team came out with their updated plugins and many others no.
Recently when I’ve tried to update one of my plugins uploading the zip file, I succeeded and correctly activated the new version, but I receive a warning message:
Warning:
call_user_func_array() expects parameter 1 to be a valid callback, array must have exactly two members in …/public_html/wp-includes/class-wp-hook.php on line 288
Do you have any idea what could be the source of the problem?
I’m also in contact with the tech support of cloudways.com, they thought the problem could be a not updated version of the theme, and actually it wasn’t updated, but even after updated as test in my staging app, when I tried to update a plugin via zip file, installation worked fine and the plugin updated too, but still I get this warning message and it doesn’t matter if I updated Yoast SEO plugins, Yith plugins etc
thanks