Fatal error: Uncaught RuntimeException: DB設定が未設定です。DB_HOST, DB_PORT, DB_DATABASE, DB_USERNAME, DB_PASSWORD を .env かサーバー環境変数で設定してください。 in /home/cantacancan/dougahensyu-guild.com/public_html/app/lib/Database.php:34 Stack trace: #0 /home/cantacancan/dougahensyu-guild.com/public_html/app/lib/BaseRepository.php(16): App\Lib\Database::connection() #1 /home/cantacancan/dougahensyu-guild.com/public_html/app/services/CourseService.php(19): App\Lib\BaseRepository->__construct() #2 /home/cantacancan/dougahensyu-guild.com/public_html/index.php(13): App\Services\CourseService->__construct() #3 {main} thrown in /home/cantacancan/dougahensyu-guild.com/public_html/app/lib/Database.php on line 34