"Authentication credentials were not provided"

To begin with: I have previously successfully created a challenge hence, I can confirm I could successfully follow the instructions.

However, I am currently encountering this an issue as a host at the time of challenge creation / update through Github.

Basically, github runner fails in the "Create of update challange" step. The same setup with same github secrets, challenge authentication team number e.g. were running a week ago.

The part of the runner logs that are possibly relevant to the issue.

```
Run python3 github/challenge_processing_script.py

Following errors occurred while validating the challenge config: 403 Client Error: Forbidden for url: https://staging.eval.ai/api/challenges/challenge/challenge_host_team/xxx/create_or_update_github_challenge/
There was an error while creating an issue: 404 {"message": "Not Found", "documentation_url": "https://docs.github.com/rest/repos/repos#get-a-repository", "status": "404"}

Exiting the challenge_processing_script.py script after failure

Error: Process completed with exit code 1.
```

Through the link this error is provided.

```
{"detail":"Authentication credentials were not provided."}
```

I would appreciate any advice you can provide to identify the issue.