Unable to connect to the GitHub API, please check your internet connection. Refresh appears inoperative.

**Describe the bug**

The extension was working, now it's not. Instead, I get the error, "Unable to connect to the GitHub API, please check your internet connection," along with a refresh button. Pressing it appears to do nothing. Nothing visible happens. Similarly, if I run the refresh from the command palette, nothing appears to happen.

**To Reproduce**

Steps to reproduce the behavior:

I do not know.

**Expected behavior**

The extension show work, offering me an effective resolution if something's wrong.

**Screenshots**
If applicable, add screenshots to help explain your problem.

You can see in the terminal that I'm online and have access to my repo on GitHub.

**Extension Version**
0.27.0

**Additional context**
Add any other context about the problem here.

Not a five-star extension, with current version last updated more than half a year ago. Nice while it was working!

The issue does not name files, tests, or entry points. Start by tracing the extension's refresh button and command-palette refresh behavior, then inspect how GitHub API connection failures are surfaced. Done means refresh produces a visible result and the extension can recover from or clearly report the connection failure.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.