@Saif, thank you for your report.
In the procedure, I instruct to send a new prompt instead of [Try Again].
When I verified it just now, I also got the same error message when I clicked [Try Again].
However, when I sent a new prompt, it worked successfully.
Could you please confirm that you are sending a new prompt instead of [Try Again]?
(Based on your report, I have updated my post to provide a clearer explanation of the procedure and the differences in behavior depending on how the prompt is sent.)