Auth::attempt一直返回false是什么问题？

逻辑代码

$post = $request->post();

if(!isset($post['remember'])) $post['remember'] = false;

DB::connection()->enableQueryLog();
 $credentials = $request->only(['name'=>$post['name'],'password'=>$post['password']],$post['remember']);

$result = Auth::attempt($credentials);

dump($result);

dd(DB::getQueryLog());

然后是auth.php配置

'defaults' => [
  'guard' => 'web',
  'passwords' => 'users',
],
'guards' => [
  'web' => [
  'driver' => 'session',
  'provider' => 'users',
  ],

  'api' => [
  'driver' => 'token',
  'provider' => 'users',
  'hash' => false,
  ],
],
'providers' => [
  'users' => [
  'driver' => 'eloquent',
  'model' => \App\Models\Admins::class,
  ]
],
'passwords' => [
  'users' => [
  'provider' => 'users',
  'table' => 'password_resets',
  'expire' => 60,
  'throttle' => 60,
  ],
],
'password_timeout' => 10800,

问题解决了

//这里是在网上复制的，还复制错了。后来调试的时候发现这个$credentials是空的，所以在查了一下$request->only是干嘛用的，才发现我这里是写错了。
$credentials = $request->only(['name'=>$post['name'],'password'=>$post['password']],$post['remember']);
//最后我把这一段代码删除了，直接在
Auth::attempt(['name'=>$post['name'],'password'=>$post['password']],$post['remember']);
//这样可以继续执行。但是我还遇到了另一个错误

错误：Argument 1 passed to Illuminate\Auth\EloquentUserProvider::validateCredentials() must be an instance of Illuminate\Contracts\Auth\Authenticatable, instance of App\Models\Admins given

//网上搜到了答案，在Model类上加\Illuminate\Contracts\Auth\Authenticatable
class Admins extends Model implements \Illuminate\Contracts\Auth\Authenticatable{
    use \Illuminate\Auth\Authenticatable;
}

目前已经正常运行了。感谢大家的查阅