Facing Issue with Coupon Posting

@admin @priyanka @bumblefoot @floriya

In the post coupon section , I am not able to post the coupons
the coupon link field is marked as optional if i leave it blank the coupon is not posting ,
stating the message “Please fill out the coupon link field”
and even when i fill the coupon link there
it shows the message “Sorry, But the URL does not seem valid!”
even though its a valid URL