Error during build in RC0

I am getting some error during build which I never get during ionic serve using browser.

And the build works sometimes and breaks sometimes and it just shows a white screen for long time.

And more over with the same code I had for beta11 and in RC0 is taking so much time to show up in device. And its not showing the splash screen :frowning:

<form  #signupCreds="ngForm">
<ion-card-header>
Login with your credentials to continue
</ion-card-header>
<ion-item>
<ion-label floating>Email</ion-label>
<ion-input [(ngModel)]="signupCreds.email" type="text" name="email"></ion-input>
</ion-item>
<ion-item>
<ion-label floating>Password</ion-label>
<ion-input type="password" [(ngModel)]="signupCreds.password" name="password"></ion-input>
</ion-item>
<button ion-button (click)="login(signupCreds)" type="submit">Login</button>
</form>

have you already corrected it??..i too got the same error while ionic bld…have you tried this:https://github.com/driftyco/ionic/issues/8541

these happen to be syntax errors, please look for your codes.
There are some errors that ionic serve doesn’t report. But it will fail during build, look at your error statements and remove those errors.

Try deleting .tmp folder