PDOException: SQLSTATE[HY000] [2002] Connection refused in /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php:128
Stack trace:
#0 /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php(128): PDO->__construct('mysql:host=127....', 'gbzmagento', 'KiYm!K2[R[W6', Array)
#1 /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Mysql.php(111): Zend_Db_Adapter_Pdo_Abstract->_connect()
#2 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(410): Zend_Db_Adapter_Pdo_Mysql->_connect()
#3 /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(861): Magento\Framework\DB\Adapter\Pdo\Mysql->_connect()
#4 /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(931): Zend_Db_Adapter_Abstract->quote('NOT LOGGED IN', NULL)
#5 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(1489): Zend_Db_Adapter_Abstract->quoteInto('{{fieldName}} =...', 'NOT LOGGED IN', NULL, NULL)
#6 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(3002): Magento\Framework\DB\Adapter\Pdo\Mysql->quoteInto('{{fieldName}} =...', 'NOT LOGGED IN')
#7 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(2976): Magento\Framework\DB\Adapter\Pdo\Mysql->_prepareQuotedSqlCondition('{{fieldName}} =...', 'NOT LOGGED IN', '`customer_group...')
#8 /home/gbz/public_html/vendor/magento/framework/Data/Collection/AbstractDb.php(485): Magento\Framework\DB\Adapter\Pdo\Mysql->prepareSqlCondition('`customer_group...', Array)
#9 /home/gbz/public_html/vendor/magento/framework/Data/Collection/AbstractDb.php(416): Magento\Framework\Data\Collection\AbstractDb->_getConditionSql('`customer_group...', Array)
#10 /home/gbz/public_html/vendor/magento/framework/Data/Collection/AbstractDb.php(393): Magento\Framework\Data\Collection\AbstractDb->_translateCondition('customer_group_...', Array)
#11 /home/gbz/public_html/vendor/magento/framework/Api/SearchCriteria/CollectionProcessor/FilterProcessor.php(89): Magento\Framework\Data\Collection\AbstractDb->addFieldToFilter(Array, Array)
#12 /home/gbz/public_html/vendor/magento/framework/Api/SearchCriteria/CollectionProcessor/FilterProcessor.php(48): Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor->addFilterGroupToCollection(Object(Magento\Framework\Api\Search\FilterGroup), Object(Magento\Customer\Model\ResourceModel\Group\Collection))
#13 /home/gbz/public_html/vendor/magento/framework/Api/SearchCriteria/CollectionProcessor.php(38): Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor->process(Object(Magento\Framework\Api\SearchCriteria), Object(Magento\Customer\Model\ResourceModel\Group\Collection))
#14 /home/gbz/public_html/vendor/magento/module-customer/Model/ResourceModel/GroupRepository.php(195): Magento\Framework\Api\SearchCriteria\CollectionProcessor->process(Object(Magento\Framework\Api\SearchCriteria), Object(Magento\Customer\Model\ResourceModel\Group\Collection))
#15 /home/gbz/public_html/app/code/Anowave/TaxSwitch/Helper/Data.php(331): Magento\Customer\Model\ResourceModel\GroupRepository->getList(Object(Magento\Framework\Api\SearchCriteria))
#16 /home/gbz/public_html/app/code/Anowave/TaxSwitch/Helper/Data.php(424): Anowave\TaxSwitch\Helper\Data->getCurrentCustomerGroupTaxDisplay()
#17 /home/gbz/public_html/app/code/Anowave/TaxSwitch/Plugin/Framework/App/Http/Context.php(64): Anowave\TaxSwitch\Helper\Data->getCurrentTaxDisplay()
#18 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(184): Anowave\TaxSwitch\Plugin\Framework\App\Http\Context->beforeGetVaryString(Object(Magento\Framework\App\Http\Context\Interceptor))
#19 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(216): Magento\Framework\App\Http\Context\Interceptor->Magento\Framework\Interception\{closure}()
#20 /home/gbz/public_html/generated/code/Magento/Framework/App/Http/Context/Interceptor.php(26): Magento\Framework\App\Http\Context\Interceptor->___callPlugins('getVaryString', Array, Array)
#21 /home/gbz/public_html/vendor/magento/framework/App/Response/Http.php(108): Magento\Framework\App\Http\Context\Interceptor->getVaryString()
#22 /home/gbz/public_html/vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php(25): Magento\Framework\App\Response\Http->sendVary()
#23 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(184): Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse(Object(Magento\Framework\App\Response\Http\Interceptor))
#24 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(216): Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}()
#25 /home/gbz/public_html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(26): Magento\Framework\App\Response\Http\Interceptor->___callPlugins('sendResponse', Array, Array)
#26 /home/gbz/public_html/vendor/magento/framework/App/ExceptionHandler.php(103): Magento\Framework\App\Response\Http\Interceptor->sendResponse()
#27 /home/gbz/public_html/vendor/magento/framework/App/ExceptionHandler.php(70): Magento\Framework\App\ExceptionHandler->handleDeveloperMode(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception), Object(Magento\Framework\App\Response\Http\Interceptor))
#28 /home/gbz/public_html/vendor/magento/framework/App/Http.php(156): Magento\Framework\App\ExceptionHandler->handle(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception), Object(Magento\Framework\App\Response\Http\Interceptor), Object(Magento\Framework\App\Request\Http))
#29 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(60): Magento\Framework\App\Http->catchException(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception))
#30 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(201): Magento\Framework\App\Http\Interceptor->___callParent('catchException', Array)
#31 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(216): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception))
#32 /home/gbz/public_html/generated/code/Magento/Framework/App/Http/Interceptor.php(39): Magento\Framework\App\Http\Interceptor->___callPlugins('catchException', Array, Array)
#33 /home/gbz/public_html/vendor/magento/framework/App/Bootstrap.php(267): Magento\Framework\App\Http\Interceptor->catchException(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception))
#34 /home/gbz/public_html/pub/index.php(40): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#35 {main}

Next Zend_Db_Adapter_Exception: SQLSTATE[HY000] [2002] Connection refused in /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php:144
Stack trace:
#0 /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Mysql.php(111): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(410): Zend_Db_Adapter_Pdo_Mysql->_connect()
#2 /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(861): Magento\Framework\DB\Adapter\Pdo\Mysql->_connect()
#3 /home/gbz/public_html/vendor/magento/zendframework1/library/Zend/Db/Adapter/Abstract.php(931): Zend_Db_Adapter_Abstract->quote('NOT LOGGED IN', NULL)
#4 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(1489): Zend_Db_Adapter_Abstract->quoteInto('{{fieldName}} =...', 'NOT LOGGED IN', NULL, NULL)
#5 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(3002): Magento\Framework\DB\Adapter\Pdo\Mysql->quoteInto('{{fieldName}} =...', 'NOT LOGGED IN')
#6 /home/gbz/public_html/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(2976): Magento\Framework\DB\Adapter\Pdo\Mysql->_prepareQuotedSqlCondition('{{fieldName}} =...', 'NOT LOGGED IN', '`customer_group...')
#7 /home/gbz/public_html/vendor/magento/framework/Data/Collection/AbstractDb.php(485): Magento\Framework\DB\Adapter\Pdo\Mysql->prepareSqlCondition('`customer_group...', Array)
#8 /home/gbz/public_html/vendor/magento/framework/Data/Collection/AbstractDb.php(416): Magento\Framework\Data\Collection\AbstractDb->_getConditionSql('`customer_group...', Array)
#9 /home/gbz/public_html/vendor/magento/framework/Data/Collection/AbstractDb.php(393): Magento\Framework\Data\Collection\AbstractDb->_translateCondition('customer_group_...', Array)
#10 /home/gbz/public_html/vendor/magento/framework/Api/SearchCriteria/CollectionProcessor/FilterProcessor.php(89): Magento\Framework\Data\Collection\AbstractDb->addFieldToFilter(Array, Array)
#11 /home/gbz/public_html/vendor/magento/framework/Api/SearchCriteria/CollectionProcessor/FilterProcessor.php(48): Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor->addFilterGroupToCollection(Object(Magento\Framework\Api\Search\FilterGroup), Object(Magento\Customer\Model\ResourceModel\Group\Collection))
#12 /home/gbz/public_html/vendor/magento/framework/Api/SearchCriteria/CollectionProcessor.php(38): Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor->process(Object(Magento\Framework\Api\SearchCriteria), Object(Magento\Customer\Model\ResourceModel\Group\Collection))
#13 /home/gbz/public_html/vendor/magento/module-customer/Model/ResourceModel/GroupRepository.php(195): Magento\Framework\Api\SearchCriteria\CollectionProcessor->process(Object(Magento\Framework\Api\SearchCriteria), Object(Magento\Customer\Model\ResourceModel\Group\Collection))
#14 /home/gbz/public_html/app/code/Anowave/TaxSwitch/Helper/Data.php(331): Magento\Customer\Model\ResourceModel\GroupRepository->getList(Object(Magento\Framework\Api\SearchCriteria))
#15 /home/gbz/public_html/app/code/Anowave/TaxSwitch/Helper/Data.php(424): Anowave\TaxSwitch\Helper\Data->getCurrentCustomerGroupTaxDisplay()
#16 /home/gbz/public_html/app/code/Anowave/TaxSwitch/Plugin/Framework/App/Http/Context.php(64): Anowave\TaxSwitch\Helper\Data->getCurrentTaxDisplay()
#17 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(184): Anowave\TaxSwitch\Plugin\Framework\App\Http\Context->beforeGetVaryString(Object(Magento\Framework\App\Http\Context\Interceptor))
#18 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(216): Magento\Framework\App\Http\Context\Interceptor->Magento\Framework\Interception\{closure}()
#19 /home/gbz/public_html/generated/code/Magento/Framework/App/Http/Context/Interceptor.php(26): Magento\Framework\App\Http\Context\Interceptor->___callPlugins('getVaryString', Array, Array)
#20 /home/gbz/public_html/vendor/magento/framework/App/Response/Http.php(108): Magento\Framework\App\Http\Context\Interceptor->getVaryString()
#21 /home/gbz/public_html/vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php(25): Magento\Framework\App\Response\Http->sendVary()
#22 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(184): Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse(Object(Magento\Framework\App\Response\Http\Interceptor))
#23 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(216): Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}()
#24 /home/gbz/public_html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(26): Magento\Framework\App\Response\Http\Interceptor->___callPlugins('sendResponse', Array, Array)
#25 /home/gbz/public_html/vendor/magento/framework/App/ExceptionHandler.php(103): Magento\Framework\App\Response\Http\Interceptor->sendResponse()
#26 /home/gbz/public_html/vendor/magento/framework/App/ExceptionHandler.php(70): Magento\Framework\App\ExceptionHandler->handleDeveloperMode(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception), Object(Magento\Framework\App\Response\Http\Interceptor))
#27 /home/gbz/public_html/vendor/magento/framework/App/Http.php(156): Magento\Framework\App\ExceptionHandler->handle(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception), Object(Magento\Framework\App\Response\Http\Interceptor), Object(Magento\Framework\App\Request\Http))
#28 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(60): Magento\Framework\App\Http->catchException(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception))
#29 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(201): Magento\Framework\App\Http\Interceptor->___callParent('catchException', Array)
#30 /home/gbz/public_html/vendor/magento/framework/Interception/Interceptor.php(216): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception))
#31 /home/gbz/public_html/generated/code/Magento/Framework/App/Http/Interceptor.php(39): Magento\Framework\App\Http\Interceptor->___callPlugins('catchException', Array, Array)
#32 /home/gbz/public_html/vendor/magento/framework/App/Bootstrap.php(267): Magento\Framework\App\Http\Interceptor->catchException(Object(Magento\Framework\App\Bootstrap), Object(Zend_Db_Adapter_Exception))
#33 /home/gbz/public_html/pub/index.php(40): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#34 {main}<br />
<b>Fatal error</b>:  Uncaught Exception: Warning: SessionHandler::write(): write failed: No space left on device (28) in /home/gbz/public_html/vendor/magento/framework/Session/SaveHandler.php on line 138 in /home/gbz/public_html/vendor/magento/framework/App/ErrorHandler.php:61
Stack trace:
#0 [internal function]: Magento\Framework\App\ErrorHandler-&gt;handler(2, 'SessionHandler:...', '/home/gbz/publi...', 138, Array)
#1 /home/gbz/public_html/vendor/magento/framework/Session/SaveHandler.php(138): SessionHandler-&gt;write('tsiln8rv2t0v1v7...', '_session_valida...')
#2 /home/gbz/public_html/vendor/magento/framework/Session/SaveHandler.php(95): Magento\Framework\Session\SaveHandler-&gt;callSafely('write', 'tsiln8rv2t0v1v7...', '_session_valida...')
#3 [internal function]: Magento\Framework\Session\SaveHandler-&gt;write('tsiln8rv2t0v1v7...', '_session_valida...')
#4 /home/gbz/public_html/vendor/magento/framework/Session/SessionManager.php(151): session_write_close()
#5 [internal function]: Magento\Framework\Session\SessionManager-&gt;writeClose()
#6 in <b>/home/gbz/public_html/vendor/magento/framework/App/ErrorHandler.php</b> on line <b>61</b><br />