Fatal error: Uncaught Error: Class 'Magento\TestFramework\Helper\Bootstrap' not found in /home/fastmicr/public_html/bg.livolo.bg/vendor/magento/module-inventory-configurable-product/Test/_files/source_items_configurable.php:15 Stack trace: #0 {main} thrown in /home/fastmicr/public_html/bg.livolo.bg/vendor/magento/module-inventory-configurable-product/Test/_files/source_items_configurable.php on line 15