[v1.8.1] TypeError - d:\OpenNumismat\open-numismat\OpenNumismat\ListView.py:1086

OpenNumismat: 1.8.1
OS: Windows 10 (10.0.17763)
Python: 3.4.4 (32bit)
Qt: 5.5.1
Locale: de

Traceback (most recent call last):
File "d:\OpenNumismat\open-numismat\OpenNumismat\ListView.py", line 1086, in paint
TypeError: arguments did not match any overloaded call:
QImage.loadFromData(str, str format=None): argument 1 has unexpected type 'str'
QImage.loadFromData(QByteArray, str format=None): argument 1 has unexpected type 'str'