Fatal error: Uncaught Error: Class 'Magento\TestFramework\Helper\Bootstrap' not found in /home/fcsus/public_html/applications/ECC/Amasty/Base/Test/Integration/_files/system_instance_key_exists.php:18 Stack trace: #0 {main} thrown in /home/fcsus/public_html/applications/ECC/Amasty/Base/Test/Integration/_files/system_instance_key_exists.php on line 18