ExpressionChangedAfterItHasBeenCheckedError Explained

Question

Please explain to me why I keep getting this error: ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked.

Obviously,

Answer 1

To anyone struggling with this. Here's a way to debug properly this error : https://blog.angular-university.io/angular-debugging/

In my case, indeed I got rid of this error using this [hidden] hack instead of *ngIf...

But the link I provided enabled me to find THE GUILTY *ngIf :)

Enjoy.