Connection refused

Fatal error: Uncaught Error: Call to a member function fim() on null in /var/www/vendor/composer/../ixc-packages/maker-extension-pack/packages/database/src/Legacy/Traits/TransactionsTrait.php:71 Stack trace: #0 /var/www/includes/classes/hotsite.php(1546): DB->fim() #1 [internal function]: hotsite->__destruct() #2 {main} thrown in /var/www/vendor/composer/../ixc-packages/maker-extension-pack/packages/database/src/Legacy/Traits/TransactionsTrait.php on line 71