Fatal error: Uncaught Error: Class "Zend\ComponentInstaller\Injector\AbstractInjector" not found in /home/mailtrim/public_html/vendor-backup/zendframework/zend-component-installer/src/Injector/ExpressiveConfigInjector.php:12 Stack trace: #0 {main} thrown in /home/mailtrim/public_html/vendor-backup/zendframework/zend-component-installer/src/Injector/ExpressiveConfigInjector.php on line 12