My PrestaShop v 1.7.4.2
Both servers from same hosting provider and they done migration.
After migrate a server I got HTTP ERROR 500
Front office and back office are not working.
Then I enabled error reports using defines.inc.php
After ('_PS_MODE_DEV_', false); Replace it with: define('_PS_MODE_DEV_', true); showing this error report
Fatal error: Uncaught Error: Class 'PrestaShop\PrestaShop\Core\ContainerBuilder' not found in /home/..../public_html/config/bootstrap.php:34 Stack trace: #0 /home/..../public_html/config/config.inc.php(57): require_once() #1 /home/..../public_html/index.php(27): require('/home/..../p...') #2 {main} thrown in /home/..../public_html/config/bootstrap.php on line 34