Hi Rani, Soni,
Thank you for your patience.
I wanted to inform you that the issue with the "Test your Knowledge" section has been resolved, and everything is now functioning as expected. You can go ahead and complete the module successfully.
If you are still facing any issue, please let us know in the comments and where you are encountering this error along with the screenshot for reference. We are glad to help you.
If the information is helpful, please Accept Answer and Upvote so that it would be helpful to community members.
Thank you.