Angular ExpressionChangedAfterItHasBeenCheckedError while using random numbers in progress bar

I get this ExpressionChangedAfterItHasBeenCheckedError when i am using random numbers progress bar in my html grid table.It says "ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value: some value. Current value: some value.". Someone please help me with the issue.