Investigate test_add_error_that_forbids_setattr fails on python3.11

[ayalash]

FAILED tests/test_add_error.py::test_add_error_that_forbids_setattr[method-True] - ValueError: too many values to unpack (expected 1)
FAILED tests/test_add_error.py::test_add_error_that_forbids_setattr[method-False] - ValueError: too many values to unpack (expected 1)
FAILED tests/test_add_error.py::test_add_error_that_forbids_setattr[function-True] - AssertionError: assert 'Special Message' in 'Exception: Set-attr'
FAILED tests/test_add_error.py::test_add_error_that_forbids_setattr[function-False] - AssertionError: assert 'Special Message' in 'Exception: Set-attr'