This error occurs on Angular projects and is cause by a new kind of syntax in *ngFor.
<ion-select>
<ion-select-option *ngFor="let function in Userfunctions" value="{{ function.function.id }}">{{ function.function.description }}</ion-select-option>
</ion-select>
Gave me this error:
How to solve: Can't bind to 'ngForIn' since it isn't a known property of 'div'
Change "in" to "to" in the *ngFor like this:
<ion-select>
<ion-select-option *ngFor="let function of Userfunctions" value="{{ function.id }}">{{ function.description }}</ion-select-option>
</ion-select>