[Bug]: Error message for auto-applied coupons

[thomaswacker]

What happened?

Create a coupon that has any restriction (like customer group) and set "auto-apply". An error message appears that you cannot apply the coupon. if you add a product to the cart.

What did you expect to happen?

No error message if user does not enter the coupon code. This happens because the exception from validateCoupon is always alerted without testing the auto_apply flag.

Version

3.x

What browser are you seeing the problem on?

Firefox, Chrome

Relevant log output

No response