Admin notice says:
Warning: require_once(/home/user/sites/**/public_html/wp-content/plugins/wp-crontrol/vendor/autoload.php): failed to open stream: No such file or directory in /home/user/sites/**/public_html/wp-content/plugins/wp-crontrol/wp-crontrol.php on line 45

Fatal error: require_once(): Failed opening required '/home/user/sites/**/public_html/wp-content/plugins/wp-crontrol/vendor/autoload.php' (include_path='.:/opt/alt/php74/usr/share/pear') in /home/user/sites/**/public_html/wp-content/plugins/wp-crontrol/wp-crontrol.php on line 45