[v1.8.7] SystemError - OpenNumismat\TabView.py:158

OpenNumismat: 1.8.7
OS: Windows 10 (10.0.19041)
Python: 3.8.3 (64bit)
Qt: 5.15.0
Locale: en

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\MainWindow.py", line 741, in openCollectionEvent
File "OpenNumismat\MainWindow.py", line 777, in openCollection
File "OpenNumismat\Tools\CursorDecorators.py", line 11, in wrapper
File "OpenNumismat\MainWindow.py", line 802, in setCollection
File "OpenNumismat\TabView.py", line 187, in setCollection
File "OpenNumismat\TabView.py", line 158, in activatedPage
SystemError: PyEval_EvalFrameEx returned a result with an error set