Warning: require(//wp-includes/abilities-api/class-wp-ability-category.php): Failed to open stream: No such file or directory in /wp-settings.php on line 288

Fatal error: Uncaught Error: Failed opening required '//wp-includes/abilities-api/class-wp-ability-category.php' (include_path='.:/usr/local/share/pear') in /wp-settings.php:288 Stack trace: #0 /wp-config.php(103): require_once() #1 /wp-load.php(50): require_once('/wp-config.php') #2 /wp-blog-header.php(13): require_once('/wp-load.php') #3 /index.php(17): require('/wp-blog-header...') #4 {main} thrown in /wp-settings.php on line 288