Currently, when a python error is encountered when rendering the UI, the corresponding message is printed to stdout / stderr via `PyErr_Print`, this patch modifies behavior so that a cursory message is also printed with CLOG This has the benefit of allowing for testing via `--debug-exit-on-error`, which aborts Blender when an error message is printed. Pull Request: https://projects.blender.org/blender/blender/pulls/146296