Replies: 2
After upgrading to the lastest plugin version today there are lots of warnings in the PHP log. We had to disable this plugin to get rid of all those errors.
PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘WPMailSMTP\tgmpa_load_bulk_installer’ not found or invalid function name in /home/telebase/public_html/staging/cms/wp-includes/class-wp-hook.php on line 286