Fatal error: Uncaught MailPoetVendor\Doctrine\DBAL\Exception: Invalid platform version "$MYSQL_VERSION" specified. The platform version has to be specified in the format: "<major_version>.<minor_version>.<patch_version>". in /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/src/Exception.php:28 Stack trace: #0 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/src/Driver/AbstractMySQLDriver.php(65): MailPoetVendor\Doctrine\DBAL\Exception::invalidPlatformVersionSpecified('$MYSQL_VERSION', '<major_version>...') #1 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/src/Driver/AbstractMySQLDriver.php(45): MailPoetVendor\Doctrine\DBAL\Driver\AbstractMySQLDriver->getOracleMysqlVersionNumber('$MYSQL_VERSION') #2 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/src/Driver/Middleware/AbstractDriverMiddleware.php(38): MailPoetVendor\Doctrine\DBAL\Driver\AbstractMySQLDriver->createDatabasePlatformForVersion('$MYSQL_VERSION') #3 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/src/Connection.php(162): MailPoetVendor\Doctrine\DBAL\Driver\Middleware\AbstractDriverMiddleware->createDatabasePlatformForVersion('$MYSQL_VERSION') #4 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/src/Connection.php(121): MailPoetVendor\Doctrine\DBAL\Connection->detectDatabasePlatform() #5 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(73): MailPoetVendor\Doctrine\DBAL\Connection->getDatabasePlatform() #6 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php(1699): MailPoetVendor\Doctrine\ORM\Persisters\Entity\BasicEntityPersister->__construct(Object(MailPoetVendor\Doctrine\ORM\EntityManager), Object(MailPoetVendor\Doctrine\ORM\Mapping\ClassMetadata)) #7 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php(78): MailPoetVendor\Doctrine\ORM\UnitOfWork->getEntityPersister('MailPoet\\Entiti...') #8 /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php(74): MailPoetVendor\Doctrine\ORM\EntityRepository->findBy(Array) #9 /home/robertok/public_html/wp-content/plugins/mailpoet/lib/Doctrine/Repository.php(84): MailPoetVendor\Doctrine\ORM\EntityRepository->findAll() #10 /home/robertok/public_html/wp-content/plugins/mailpoet/lib/Settings/SettingsController.php(147): MailPoet\Doctrine\Repository->findAll() #11 /home/robertok/public_html/wp-content/plugins/mailpoet/lib/Settings/SettingsController.php(37): MailPoet\Settings\SettingsController->ensureLoaded() #12 /home/robertok/public_html/wp-content/plugins/mailpoet/lib/Captcha/CaptchaHooks.php(29): MailPoet\Settings\SettingsController->get('captcha.on_regi...', false) #13 /home/robertok/public_html/wp-content/plugins/mailpoet/lib/Config/Hooks.php(613): MailPoet\Captcha\CaptchaHooks->isEnabled() #14 /home/robertok/public_html/wp-content/plugins/mailpoet/lib/Config/Hooks.php(170): MailPoet\Config\Hooks->setupCaptchaOnRegisterForm() #15 /home/robertok/public_html/wp-content/plugins/mailpoet/lib/Config/Initializer.php(322): MailPoet\Config\Hooks->init() #16 /home/robertok/public_html/wp-includes/class-wp-hook.php(324): MailPoet\Config\Initializer->pluginsLoaded('') #17 /home/robertok/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #18 /home/robertok/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #19 /home/robertok/public_html/wp-settings.php(578): do_action('plugins_loaded') #20 /home/robertok/public_html/wp-config.php(91): require_once('/home/robertok/...') #21 /home/robertok/public_html/wp-load.php(50): require_once('/home/robertok/...') #22 /home/robertok/public_html/wp-blog-header.php(13): require_once('/home/robertok/...') #23 /home/robertok/public_html/index.php(17): require('/home/robertok/...') #24 {main} thrown in /home/robertok/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/src/Exception.php on line 28