# Cannot read property 'hasError' of undefined

**URL:** <https://forum.ionicframework.com/t/cannot-read-property-haserror-of-undefined/110443>\
**Category:** ionic-v3\
**Created:** [October 30, 2017, 12:16pm UTC](https://forum.ionicframework.com/t/cannot-read-property-haserror-of-undefined/110443 "2017-10-30T12:16:29Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![AjithManali](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/ajithmanali/32/117507_2.png) [@AjithManali](https://forum.ionicframework.com/u/AjithManali)\
**Post date:** [October 30, 2017, 12:16pm UTC](https://forum.ionicframework.com/t/cannot-read-property-haserror-of-undefined/110443/1 "2017-10-30T12:16:29Z")

</div>

I have the problem with the validation.

TypeError: Cannot read property ‘hasError’ of undefined  
at Object.View\_LoginPage\_0.\_co [as updateDirectives] (ng:///LoginPageModule/LoginPage.ngfactory.js:189:34)  
at Object.debugUpdateDirectives [as updateDirectives] ([http://localhost:8100/build/vendor.js:13443:21](http://localhost:8100/build/vendor.js:13443:21))  
at checkAndUpdateView ([http://localhost:8100/build/vendor.js:12620:14](http://localhost:8100/build/vendor.js:12620:14))  
at callViewAction ([http://localhost:8100/build/vendor.js:12988:21](http://localhost:8100/build/vendor.js:12988:21))  
at execComponentViewsAction ([http://localhost:8100/build/vendor.js:12920:13](http://localhost:8100/build/vendor.js:12920:13))  
at checkAndUpdateView ([http://localhost:8100/build/vendor.js:12626:5](http://localhost:8100/build/vendor.js:12626:5))  
at callViewAction ([http://localhost:8100/build/vendor.js:12988:21](http://localhost:8100/build/vendor.js:12988:21))  
at execEmbeddedViewsAction ([http://localhost:8100/build/vendor.js:12946:17](http://localhost:8100/build/vendor.js:12946:17))  
at checkAndUpdateView ([http://localhost:8100/build/vendor.js:12621:5](http://localhost:8100/build/vendor.js:12621:5))  
at callViewAction ([http://localhost:8100/build/vendor.js:12988:21](http://localhost:8100/build/vendor.js:12988:21))

```auto
 <form [formGroup]="formgroup">
<ion-list>
  <ion-item>
    <ion-label floating>Mobile</ion-label>
    <ion-input type="number" formControlName="mobile"></ion-input>
   
  </ion-item>
  <ion-item *ngIf="mobile.hasError('required') && mobile.touched">
    <p>mobile required</p>
  </ion-item>
  <ion-item *ngIf="mobile.hasError('minlength') && mobile.touched">
      <p>min 10 num required</p>
  </ion-item>
  <ion-item *ngIf="mobile.hasError('minlength') && mobile.touched">
      <p>max 10 num required</p>
  </ion-item>
</ion-list>
<ion-list>
    <ion-item>
      <ion-label floating>Password</ion-label>
      <ion-input type="password" formControlName="password"></ion-input>
      
    </ion-item>
    <ion-item *ngIf="password.hasError('required') && password.touched">
        <p>password required</p>
      </ion-item>
  
  </ion-list>

  <div padding>
      <button [disabled]="!formgroup.valid" (click)="doLogin()"ion-button color="danger" block>{{ 'LOGIN_BUTTON' | translate }}</button>
    </div>
  </form>

```