Fatal error: Uncaught Error: Class 'Amasty\PageSpeedOptimizer\Model\HeaderProvider\IsSetXFrameOptions' not found in /home/kaisersport/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php:60 Stack trace: #0 /home/kaisersport/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Amasty\\PageSpee...') #1 /home/kaisersport/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Amasty\\PageSpee...') #2 /home/kaisersport/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Amasty\\PageSpee...') #3 /home/kaisersport/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(125): Magento\Framework\ObjectManager\Factory\Compiled->get('Amasty\\PageSpee...') #4 /home/kaisersport/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(86): Magento\Framework\ObjectManager\Factory\Compiled->parseA in /home/kaisersport/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php on line 60