Laravel8报错Call to undefined method Monolog\Logger::useFiles()

Log::useFiles(storage_path('logs/api.log'), 'debug');
Log::debug("test --------------------------------");

//定义支付日志目录
'pay' => [
	'driver' => 'single',
	'path' => storage_path('logs/pay/'.date('Y-m-d').'pay.log'),
	'level' => env('LOG_LEVEL', 'debug'),
],

Log::channel('pay')->debug('Something happened!');