Fatal error: Uncaught PrestaShopException: Link to database cannot be established: SQLSTATE[HY000] [2002] Connection refused in /var/www/prestashop/classes/db/DbPDO.php:119 Stack trace: #0 /var/www/prestashop/classes/db/Db.php(380): DbPDOCore->connect() #1 /var/www/prestashop/classes/db/Db.php(664): DbCore->query() #2 /var/www/prestashop/src/Adapter/EntityMapper.php(71): DbCore->getRow() #3 /var/www/prestashop/classes/ObjectModel.php(282): PrestaShop\PrestaShop\Adapter\EntityMapper->load() #4 /var/www/prestashop/classes/Category.php(164): ObjectModelCore->__construct() #5 /var/www/prestashop/classes/Link.php(402): CategoryCore->__construct() #6 /var/www/prestashop/classes/Link.php(458): LinkCore->getCategoryObject() #7 /var/www/prestashop/var/cache/dev/smarty/compile/probusiness/05/ab/98/05ab9860f568754a637f5294d0ae84436b0724ae_2.file.categories-tree.tpl.php(33): LinkCore->getCategoryLink() #8 /var/www/prestashop/vendor/smarty/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_67ee3c58a347b7_02562585() in /var/www/prestashop/classes/Hook.php on line 431