Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in D:\programs\xampp\htdocs\backend-test\vendor\dcblogdev\laravel-dropbox\src\database\migrations\create_dropbox_tokens_table.php:7 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\dcblogdev\laravel-dropbox\src\database\migrations\create_dropbox_tokens_table.php on line 7