Warning: Undefined array key "section" in /var/www/html/wp-content/plugins/w3-total-cache/Cache_File.php on line 87

Warning: Undefined array key "section" in /var/www/html/wp-content/plugins/w3-total-cache/Cache_File.php on line 98

Fatal error: Uncaught Error: Call to undefined method WP_Textdomain_Registry::init() in /var/www/html/wp-settings.php:433
Stack trace:
#0 /var/www/html/wp-config.php(129): require_once()
#1 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#2 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#3 /var/www/html/index.php(17): require('/var/www/html/w...')
#4 {main}
  thrown in /var/www/html/wp-settings.php on line 433