Hi,

I am trying to automate a a web application where stripe is integrated. While I am on payment page try to enter the correct coupon code then it shows the following error: "Failed to load resource: the server responded with a status of 400 ()".
Also, please see the attached screenshot.

Since the launched browser window is being controlled by selenium or katalon so it's giving such error. However if I copy the same URL and use the same coupon code and pay for the product for testing then it shows successful.

Please let me know how can I continue using selenium or katalon and complete the script without an error.

Regards,
Sunil