Fatal error: Uncaught Error: Class "Drupal\Tests\migrate_drupal\Kernel\d7\MigrateDrupal7TestBase" not found in /home/fnbrshareacopy/public_html/modules/contrib/smtp/tests/src/Kernel/ValidateD7MigrationStateTest.php:18 Stack trace: #0 {main} thrown in /home/fnbrshareacopy/public_html/modules/contrib/smtp/tests/src/Kernel/ValidateD7MigrationStateTest.php on line 18