Argument 1 passed to Illuminate\Routing\Middleware\ThrottleRequests::addHeaders() must be an instance of Symfony\Component\HttpFoundation\Response, string given, called in D:\ProgramFiles\phpstudy_pro\WWW\laravel8\vendor\laravel\framework\src\Illuminate\Routing\Middleware\ThrottleRequests.php on line 133
出现这个问题是因为中间件中使用了json_encode()函数，解决方法是换成response ()->json();
return response ()->json($content);
