Fatal error: Uncaught Error: Call to undefined method Bitrix\Main\Loader::registerHandler() in /var/www/html/bitrix/modules/main/include/autoload.php:187 Stack trace: #0 /var/www/html/bitrix/modules/main/start.php(13): require_once() #1 /var/www/html/bitrix/modules/main/include.php(14): require_once('/var/www/html/b...') #2 /var/www/html/bitrix/modules/main/include/prolog_before.php(19): require_once('/var/www/html/b...') #3 /var/www/html/bitrix/modules/main/include/prolog.php(10): require_once('/var/www/html/b...') #4 /var/www/html/bitrix/header.php(1): require_once('/var/www/html/b...') #5 /var/www/html/index.php(2): require('/var/www/html/b...') #6 {main} thrown in /var/www/html/bitrix/modules/main/include/autoload.php on line 187