[v1.8.22] TypeError - OpenNumismat\Reports\Report.py:127

OpenNumismat: 1.8.22
OS: Windows 10 (10.0.22621)
Python: 3.10.10 (64bit)
Qt: 5.15.9
Locale: de

Traceback (most recent call last):
File "OpenNumismat\MainWindow.py", line 723, in viewBrowserEvent
File "OpenNumismat\ListView.py", line 209, in viewInBrowser
File "OpenNumismat\Reports\Report.py", line 127, in generate
TypeError: %d format: a real number is required, not NoneType