[v1.9.7] TypeError - OpenNumismat\ListView.py:113

OpenNumismat: 1.9.7
OS: Windows 10 (10.0.19045)
Python: 3.12.2 (64bit)
Qt: 6.6.3
Locale: de

Traceback (most recent call last):
File "OpenNumismat\PageView.py", line 100, in modelChanged
File "OpenNumismat\ListView.py", line 766, in modelChanged
File "OpenNumismat\ListView.py", line 113, in modelChanged
TypeError: %d format: a real number is required, not NoneType