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docs: Add troubleshooting entry for Python 3.13 FrameLocalsProxy ValueError #124

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Add troubleshooting section for FrameLocalsProxy ValueError in README
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Expand Up @@ -44,6 +44,32 @@ az vm repair -h
az vm repair <command> -h
```

## Troubleshooting

### `ValueError: cannot remove local variables from FrameLocalsProxy`

**Symptoms:** Running any `az vm repair` command (e.g., `az vm repair create`) fails with:
```
ValueError: cannot remove local variables from FrameLocalsProxy
```

**Cause:** This error occurs when using Python 3.13 or later. In Python 3.13, `frame.f_locals` returns a `FrameLocalsProxy` object instead of a plain `dict`. The older version of the `vm-repair` extension attempted to delete an item directly from this proxy object, which is not supported.

**Fix:** Update the `vm-repair` extension to version **2.1.3** or later:
```
az extension update -n vm-repair
```

If the extension is not installed yet:
```
az extension add -n vm-repair
```

Verify the installed version:
```
az extension show -n vm-repair --query version
```

# Contributing

**Adding new scripts**: https://github.com/Azure/repair-script-library/blob/master/doc/adding_new_scripts.md
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