Fatal error: Uncaught Error: Class 'think\migration\command\Migrate' not found in E:\xampp\htdocs\www\TT\ThinkPHP\vendor\topthink\think-migration\src\command\migrate\Breakpoint.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\TT\ThinkPHP\vendor\topthink\think-migration\src\command\migrate\Breakpoint.php on line 19