Fatal error: Uncaught Error: Call to a member function add_cap() on null in /var/www/html/wp-content/plugins/booked/booked.php:962 Stack trace: #0 /var/www/html/wp-settings.php(305): include_once() #1 /var/www/html/wp-config.php(95): require_once('/var/www/html/w...') #2 /var/www/html/wp-load.php(37): require_once('/var/www/html/w...') #3 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...') #4 /var/www/html/index.php(17): require('/var/www/html/w...') #5 {main} thrown in /var/www/html/wp-content/plugins/booked/booked.php on line 962