Fatal error: Uncaught TypeError: WS\JTL5\V2_1_2\Helper\AbstractPluginHelper::Plugin(): Return value must be of type JTL\Plugin\PluginInterface, null returned in /var/www/vhosts/besa.energy/httpdocs/shop/plugins/ws5_sendinblue/vendor/webstollen/jtl5-core-plugin-library-v2_1_2/src/Traits/Plugins.php(2) : eval()'d code:20 Stack trace: #0 /var/www/vhosts/besa.energy/httpdocs/shop/plugins/ws5_sendinblue/vendor/webstollen/jtl5-core-plugin-library-v2_1_2/src/Helper/AbstractPluginHelper.php(2) : eval()'d code(29): WS\JTL5\V2_1_2\Helper\AbstractPluginHelper::Plugin() #1 /var/www/vhosts/besa.energy/httpdocs/shop/plugins/ws5_sendinblue/lib/Hooks/Frontend.php(2) : eval()'d code(14): WS\JTL5\V2_1_2\Helper\AbstractPluginHelper::getPlugin() #2 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Events/Dispatcher.php(72): Plugin\ws5_sendinblue\lib\Hooks\Frontend::execute() #3 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Plugin/HookManager.php(96): JTL\Events\Dispatcher->fire() #4 /var/www/vhosts/besa.energy/httpdocs/shop/includes/defines.php(343): JTL\Plugin\HookManager->executeHook() #5 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Smarty/JTLSmarty.php(202): executeHook() #6 /var/www/vhosts/besa.energy/httpdocs/shop/includes/vendor/smarty/smarty/libs/sysplugins/smarty_internal_runtime_filterhandler.php(63): JTL\Smarty\JTLSmarty->outputFilter() #7 /var/www/vhosts/besa.energy/httpdocs/shop/includes/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php(255): Smarty_Internal_Runtime_FilterHandler->runFilter() #8 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Smarty/JTLSmartyTemplateClass.php(61): Smarty_Internal_Template->render() #9 /var/www/vhosts/besa.energy/httpdocs/shop/includes/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatebase.php(238): JTL\Smarty\JTLSmartyTemplateClass->render() #10 /var/www/vhosts/besa.energy/httpdocs/shop/includes/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatebase.php(116): Smarty_Internal_TemplateBase->_execute() #11 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Smarty/JTLSmarty.php(332): Smarty_Internal_TemplateBase->fetch() #12 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Router/Controller/ProductListController.php(205): JTL\Smarty\JTLSmarty->getResponse() #13 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Router/Controller/CharacteristicValueController.php(75): JTL\Router\Controller\ProductListController->getResponse() #14 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Router/Controller/DefaultController.php(137): JTL\Router\Controller\CharacteristicValueController->getResponse() #15 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Router/Controller/DefaultController.php(108): JTL\Router\Controller\DefaultController->redirectOldRoute() #16 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Router/Router.php(670): JTL\Router\Controller\DefaultController->getResponse() #17 /var/www/vhosts/besa.energy/httpdocs/shop/includes/src/Shop.php(378): JTL\Router\Router->dispatch() #18 /var/www/vhosts/besa.energy/httpdocs/shop/index.php(9): JTL\Shop::dispatch() #19 {main} thrown in /var/www/vhosts/besa.energy/httpdocs/shop/plugins/ws5_sendinblue/vendor/webstollen/jtl5-core-plugin-library-v2_1_2/src/Traits/Plugins.php(2) : eval()'d code on line 20