'yii\base\InvalidConfigException' with message 'Invalid CAPTCHA action ID:

纠结的问题   最后只是选择了默认的配置

上代码:

model :

public function rules()
{
return [
['username', 'filter', 'filter' => 'trim'],
['username', 'required'],
['username', 'unique', 'targetClass' => '\common\models\Adminuser', 'message' => '用户名已经存在.'],
['username', 'string', 'min' => 2, 'max' => 255],

['email', 'filter', 'filter' => 'trim'],
['email', 'required'],
['email', 'email'],
['email', 'string', 'max' => 255],
['email', 'unique', 'targetClass' => '\common\models\Adminuser', 'message' => '邮件地址已经存在.'],

['password', 'required'],
['password', 'string', 'min' => 6],

['password_repeat','compare','compareAttribute'=>'password','message'=>'两次输入的密码不一致！'],

['nickname','required'],
['nickname','string','max'=>128],

['profile','string'],
['verifyCode','captcha', 'captchaAction' => '/backend/Adminuser/captcha'],
];
}

控制器:

public function actions()
{
return [
'error' => [
'class' => 'yii\web\ErrorAction',
],
'captcha' => [
'class' => 'yii\captcha\CaptchaAction',
'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
],
];
}

view:

<?=  $form->field($model,'verifyCode')->widget(Captcha::ClassName(),[
'captchaAction' => 'Adminuser/captcha',
'template' => '<div class="row"><div class="col-lg-3">{image}</div><div class="col-lg-6">{input}</div></div>',
]) ?>

解决:

怎么调整都不行  之后跟踪到报错的位置:   /vendor/yiisoft/yii2/captcha/CaptchaValidator.php:81

发现了这样的一行代码  

$ca = Yii::$app->createController($this->captchaAction);

public $captchaAction = 'site/captcha';

所以呢 怀疑是model里面的配置的问题 现在去掉了 model,view 里面的

'captchaAction' => '/backend/Adminuser/captcha' 

控制器也去掉了 关于captcha的配置   然后不在报错  

这时候验证码不显示   怀疑是权限的问题 ,添加了红色的部分  ok 

public function behaviors()
{
return [
'access' => [
'class' => AccessControl::className(),
'rules' => [
[
'actions' => ['login', 'error','captcha'],
'allow' => true,
],
[
'actions' => ['logout', 'index'],
'allow' => true,
'roles' => ['@'],
],
],
],
'verbs' => [
'class' => VerbFilter::className(),
'actions' => [
'logout' => ['post'],
],
],
];
}