[$30] Member's with special characters in their handle unable to register to any challenge

[shivam-51]

Describe the bug
On clicking on Register i get an error message saying "ERROR: Failed to register for challenge"

To Reproduce
Steps to reproduce the behavior:

1. Go to https://www.topcoder.com/challenges/c2a1465d-78cb-42b8-8f88-3d1ae386d3c5?tab=details
2. Click on Register
3. See error

Expected behavior
Getting registered for the challenge without any error

Screenshots

Desktop (please complete the following information):

• OS: Linux 18.04
• Browser chrome

Additional context
Attached chrome log
log.txt

[Oanh-and-only-Oanh]

@lakshmiathreya fyi

[lakshmiathreya]

@shivam-51 I was able to register successfully with this challenge. Can you try again and let me know.

[lakshmiathreya]

screencast 2020-08-20 08-54-08 (1).mp4.zip

[lakshmiathreya]

cc @Oanh-and-only-Oanh

[sushilshinde]

@shivam-51 can you share network tab video with actuall API response payload message.

[shivam-51]

@sushilshinde I was registered for the challenge from back-end. I tried to Unregister and the problem came again.

SC.mp4.zip

[sushilshinde]

@shivam-51 can you find me on Topcoder Community Slack

My handle : Sushil

[shivam-51]

@shivam-51 can you find me on Topcoder Community Slack

My handle : Sushil

Sure

[mtwomey]

@shivam-51 - if you are willing, could you please grab the specific request that's erroring in the Chrome debugger and the response? That would really help us: