[SDK generation] unexpected error log

When generate SDK locally with the following steps:
```
npm install -g @azure-tools/typespec-client-generator-cli
python -m venv .venv

.\.venv\Scripts\Activate.ps1

python .\scripts\dev_setup.py -p azure-core

pip install tox

pip install setuptools==70.0.0

python -m packaging_tools.sdk_generator ..\generatedInput.json ..\temp.json

python -m packaging_tools.sdk_package ..\temp.json ..\generatedOutput.json
```

The following error found in logs: