OpenLP not working on Linux Mint 21 (=Ubuntu 22.04) ?

Hi OpenLP users,

Openlp is running fine on Linux Mint 20.3, a few weeks ago Linux Mint 21 came out, based on Ubuntu 22.04.

I installed OpenLP from the LM21 repository. When the main window tries to start, a fatal error message shows up and the program crashes.

System: fresh installed Linux Mint 21 (Ubuntu 22.04)

OpenLP Version: 2.4.6

Error message as follows:

Traceback:

File "/usr/share/openlp/openlp/core/ui/mainwindow.py", line 823 in paintEvent

 self.preview_controller.preview_size_changed()

File "/usr/share/openlp/openlp/core/ui/slidecontroller.py" line 619, in preview_size_changed

 max_height = self.preview_frame_height() - self.grid.contentsMargins().top() * 2

AttributError: 'PreviewController' object has no attribute 'grid'

Here a part of the screen:



Any ideas ? A library conflict ? Conflict with Python3 ?

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