Fix ThreadPoolBuildError

✅ Solution

The "ThreadPoolBuildError" in ruff often arises from resource limitations when creating worker threads, especially with a high number of CPUs. To resolve this, reduce the `concurrency` setting in your ruff configuration file (e.g., pyproject.toml) to a lower value, or explicitly set it to `1` to disable threading and use a single process. If you encounter this error locally, consider if the number of logical cores is being correctly detected.