[v1.8.5] SystemError - OpenNumismat/TabView.py:158

OpenNumismat: 1.8.5
OS: Darwin 19.3.0 (Darwin Kernel Version 19.3.0: Thu Jan 9 20:58:23 PST 2020; root:xnu-6153.81.5~1/RELEASE_X86_64)
Python: 3.6.4 (64bit)
Qt: 5.9.2
Locale: de

RuntimeError: wrapped C/C object of type PageView has been deleted

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "OpenNumismat/TabView.py", line 158, in activatedPage
SystemError: PyEval_EvalFrameEx returned a result with an error set