- Fix `validate_runtime_error` to reference `self.runtime_error_message` instead of undefined `runtime_error_message` - Ensure `color_text` returns `str(text)` on Windows to avoid type mismatch when non-string input is passed
- Fix `validate_runtime_error` to reference `self.runtime_error_message` instead of undefined `runtime_error_message` - Ensure `color_text` returns `str(text)` on Windows to avoid type mismatch when non-string input is passed