PDOException: SQLSTATE[HY000] [2002] Connection refused in /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php:128
Stack trace:
#0 /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php(128): PDO->__construct()
#1 /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Mysql.php(111): Zend_Db_Adapter_Pdo_Abstract->_connect()
#2 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(424): Zend_Db_Adapter_Pdo_Mysql->_connect()
#3 /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(861): Magento\Framework\DB\Adapter\Pdo\Mysql->_connect()
#4 /var/www/html/generated/code/Firebear/ImportExport/Setup/Db/Adapter/Pdo/Mysql/Interceptor.php(1139): Zend_Db_Adapter_Abstract->quote()
#5 /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(931): Firebear\ImportExport\Setup\Db\Adapter\Pdo\Mysql\Interceptor->quote()
#6 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(1529): Zend_Db_Adapter_Abstract->quoteInto()
#7 /var/www/html/generated/code/Firebear/ImportExport/Setup/Db/Adapter/Pdo/Mysql/Interceptor.php(257): Magento\Framework\DB\Adapter\Pdo\Mysql->quoteInto()
#8 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(3076): Firebear\ImportExport\Setup\Db\Adapter\Pdo\Mysql\Interceptor->quoteInto()
#9 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(3059): Magento\Framework\DB\Adapter\Pdo\Mysql->_prepareQuotedSqlCondition()
#10 /var/www/html/generated/code/Firebear/ImportExport/Setup/Db/Adapter/Pdo/Mysql/Interceptor.php(563): Magento\Framework\DB\Adapter\Pdo\Mysql->prepareSqlCondition()
#11 /var/www/html/vendor/magento/framework/Data/Collection/AbstractDb.php(485): Firebear\ImportExport\Setup\Db\Adapter\Pdo\Mysql\Interceptor->prepareSqlCondition()
#12 /var/www/html/vendor/magento/framework/Data/Collection/AbstractDb.php(416): Magento\Framework\Data\Collection\AbstractDb->_getConditionSql()
#13 /var/www/html/vendor/magento/framework/Data/Collection/AbstractDb.php(398): Magento\Framework\Data\Collection\AbstractDb->_translateCondition()
#14 /var/www/html/vendor/magento/module-rule/Model/ResourceModel/Rule/Collection/AbstractCollection.php(121): Magento\Framework\Data\Collection\AbstractDb->addFieldToFilter()
#15 /var/www/html/vendor/amasty/groupcat/Model/ResourceModel/Rule/Collection.php(119): Magento\Rule\Model\ResourceModel\Rule\Collection\AbstractCollection->addFieldToFilter()
#16 /var/www/html/generated/code/Amasty/Groupcat/Model/ResourceModel/Rule/Collection/Interceptor.php(32): Amasty\Groupcat\Model\ResourceModel\Rule\Collection->addFieldToFilter()
#17 /var/www/html/vendor/magento/module-rule/Model/ResourceModel/Rule/Collection/AbstractCollection.php(134): Amasty\Groupcat\Model\ResourceModel\Rule\Collection\Interceptor->addFieldToFilter()
#18 /var/www/html/generated/code/Amasty/Groupcat/Model/ResourceModel/Rule/Collection/Interceptor.php(131): Magento\Rule\Model\ResourceModel\Rule\Collection\AbstractCollection->addIsActiveFilter()
#19 /var/www/html/vendor/amasty/groupcat/Model/ProductRuleProvider.php(118): Amasty\Groupcat\Model\ResourceModel\Rule\Collection\Interceptor->addIsActiveFilter()
#20 /var/www/html/vendor/amasty/groupcat/Plugin/Framework/App/Http/Context.php(46): Amasty\Groupcat\Model\ProductRuleProvider->getActiveRulesCollection()
#21 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(121): Amasty\Groupcat\Plugin\Framework\App\Http\Context->beforeGetVaryString()
#22 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Context\Interceptor->Magento\Framework\Interception\{closure}()
#23 /var/www/html/generated/code/Magento/Framework/App/Http/Context/Interceptor.php(59): Magento\Framework\App\Http\Context\Interceptor->___callPlugins()
#24 /var/www/html/vendor/magento/framework/App/Response/Http.php(108): Magento\Framework\App\Http\Context\Interceptor->getVaryString()
#25 /var/www/html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(32): Magento\Framework\App\Response\Http->sendVary()
#26 /var/www/html/vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php(29): Magento\Framework\App\Response\Http\Interceptor->sendVary()
#27 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(121): Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse()
#28 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}()
#29 /var/www/html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(86): Magento\Framework\App\Response\Http\Interceptor->___callPlugins()
#30 /var/www/html/vendor/magento/framework/App/ExceptionHandler.php(103): Magento\Framework\App\Response\Http\Interceptor->sendResponse()
#31 /var/www/html/vendor/magento/framework/App/ExceptionHandler.php(70): Magento\Framework\App\ExceptionHandler->handleDeveloperMode()
#32 /var/www/html/vendor/magento/framework/App/Http.php(156): Magento\Framework\App\ExceptionHandler->handle()
#33 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->catchException()
#34 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent()
#35 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}()
#36 /var/www/html/generated/code/Magento/Framework/App/Http/Interceptor.php(32): Magento\Framework\App\Http\Interceptor->___callPlugins()
#37 /var/www/html/vendor/magento/framework/App/Bootstrap.php(269): Magento\Framework\App\Http\Interceptor->catchException()
#38 /var/www/html/pub/index.php(29): Magento\Framework\App\Bootstrap->run()
#39 {main}

Next Zend_Db_Adapter_Exception: SQLSTATE[HY000] [2002] Connection refused in /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php:144
Stack trace:
#0 /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Mysql.php(111): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(424): Zend_Db_Adapter_Pdo_Mysql->_connect()
#2 /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(861): Magento\Framework\DB\Adapter\Pdo\Mysql->_connect()
#3 /var/www/html/generated/code/Firebear/ImportExport/Setup/Db/Adapter/Pdo/Mysql/Interceptor.php(1139): Zend_Db_Adapter_Abstract->quote()
#4 /var/www/html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(931): Firebear\ImportExport\Setup\Db\Adapter\Pdo\Mysql\Interceptor->quote()
#5 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(1529): Zend_Db_Adapter_Abstract->quoteInto()
#6 /var/www/html/generated/code/Firebear/ImportExport/Setup/Db/Adapter/Pdo/Mysql/Interceptor.php(257): Magento\Framework\DB\Adapter\Pdo\Mysql->quoteInto()
#7 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(3076): Firebear\ImportExport\Setup\Db\Adapter\Pdo\Mysql\Interceptor->quoteInto()
#8 /var/www/html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(3059): Magento\Framework\DB\Adapter\Pdo\Mysql->_prepareQuotedSqlCondition()
#9 /var/www/html/generated/code/Firebear/ImportExport/Setup/Db/Adapter/Pdo/Mysql/Interceptor.php(563): Magento\Framework\DB\Adapter\Pdo\Mysql->prepareSqlCondition()
#10 /var/www/html/vendor/magento/framework/Data/Collection/AbstractDb.php(485): Firebear\ImportExport\Setup\Db\Adapter\Pdo\Mysql\Interceptor->prepareSqlCondition()
#11 /var/www/html/vendor/magento/framework/Data/Collection/AbstractDb.php(416): Magento\Framework\Data\Collection\AbstractDb->_getConditionSql()
#12 /var/www/html/vendor/magento/framework/Data/Collection/AbstractDb.php(398): Magento\Framework\Data\Collection\AbstractDb->_translateCondition()
#13 /var/www/html/vendor/magento/module-rule/Model/ResourceModel/Rule/Collection/AbstractCollection.php(121): Magento\Framework\Data\Collection\AbstractDb->addFieldToFilter()
#14 /var/www/html/vendor/amasty/groupcat/Model/ResourceModel/Rule/Collection.php(119): Magento\Rule\Model\ResourceModel\Rule\Collection\AbstractCollection->addFieldToFilter()
#15 /var/www/html/generated/code/Amasty/Groupcat/Model/ResourceModel/Rule/Collection/Interceptor.php(32): Amasty\Groupcat\Model\ResourceModel\Rule\Collection->addFieldToFilter()
#16 /var/www/html/vendor/magento/module-rule/Model/ResourceModel/Rule/Collection/AbstractCollection.php(134): Amasty\Groupcat\Model\ResourceModel\Rule\Collection\Interceptor->addFieldToFilter()
#17 /var/www/html/generated/code/Amasty/Groupcat/Model/ResourceModel/Rule/Collection/Interceptor.php(131): Magento\Rule\Model\ResourceModel\Rule\Collection\AbstractCollection->addIsActiveFilter()
#18 /var/www/html/vendor/amasty/groupcat/Model/ProductRuleProvider.php(118): Amasty\Groupcat\Model\ResourceModel\Rule\Collection\Interceptor->addIsActiveFilter()
#19 /var/www/html/vendor/amasty/groupcat/Plugin/Framework/App/Http/Context.php(46): Amasty\Groupcat\Model\ProductRuleProvider->getActiveRulesCollection()
#20 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(121): Amasty\Groupcat\Plugin\Framework\App\Http\Context->beforeGetVaryString()
#21 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Context\Interceptor->Magento\Framework\Interception\{closure}()
#22 /var/www/html/generated/code/Magento/Framework/App/Http/Context/Interceptor.php(59): Magento\Framework\App\Http\Context\Interceptor->___callPlugins()
#23 /var/www/html/vendor/magento/framework/App/Response/Http.php(108): Magento\Framework\App\Http\Context\Interceptor->getVaryString()
#24 /var/www/html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(32): Magento\Framework\App\Response\Http->sendVary()
#25 /var/www/html/vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php(29): Magento\Framework\App\Response\Http\Interceptor->sendVary()
#26 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(121): Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse()
#27 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}()
#28 /var/www/html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(86): Magento\Framework\App\Response\Http\Interceptor->___callPlugins()
#29 /var/www/html/vendor/magento/framework/App/ExceptionHandler.php(103): Magento\Framework\App\Response\Http\Interceptor->sendResponse()
#30 /var/www/html/vendor/magento/framework/App/ExceptionHandler.php(70): Magento\Framework\App\ExceptionHandler->handleDeveloperMode()
#31 /var/www/html/vendor/magento/framework/App/Http.php(156): Magento\Framework\App\ExceptionHandler->handle()
#32 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->catchException()
#33 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent()
#34 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}()
#35 /var/www/html/generated/code/Magento/Framework/App/Http/Interceptor.php(32): Magento\Framework\App\Http\Interceptor->___callPlugins()
#36 /var/www/html/vendor/magento/framework/App/Bootstrap.php(269): Magento\Framework\App\Http\Interceptor->catchException()
#37 /var/www/html/pub/index.php(29): Magento\Framework\App\Bootstrap->run()
#38 {main}