FATAL ERROR on my site caused by your plugin

Suddenly out of nowhere I have today recieved this fatal error which stops the webpage loading. Can you tell me why? I have had to disable the plugin as the whole website was broken because of your plugin. TIA.

Warning: require_once(/home/xxxxx/public_html/wp-content/plugins/slick-popup/libs/admin/admin-functions.php): failed to open stream: No such file or directory in /home/wwwmildenhire/public_html/wp-content/plugins/slick-popup/slick-popup.php on line 32

Fatal error: require_once(): Failed opening required ‘/home/wwwmildenhire/public_html/wp-content/plugins/slick-popup/libs/admin/admin-functions.php’ (include_path=’.:/opt/php56/lib/php’) in /home/wwwmildenhire/public_html/wp-content/plugins/slick-popup/slick-popup.php on line 32

Fatal error: Call to undefined function is_user_logged_in() in /home/wwwmildenhire/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 370

• This topic was modified 6 years, 7 months ago by airforceadvice.