initGui() method error at install on Ubuntu server

[BallJonathan]

Reported by User:

Hello,

On several occasions I have attempted to install the QGIS Koordinates plugin. Each time it fails, including when I uninstall and reinstall the plugin. The error message is below. QGIS is installed on a stand alone ubuntu server. QGIS is used by a single user.

Couldn't load plugin 'koordinates' due to an error when calling its initGui() method

AttributeError: 'QMainWindow' object has no attribute 'screen'
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/qgis/utils.py", line 448, in startPlugin
plugins[packageName].initGui()
File "/home/administrator/.local/share/QGIS/QGIS3/profiles/default/python/plugins/koordinates/plugin.py", line 49, in initGui
self.dock = Koordinates(self.iface.mainWindow())
File "/home/administrator/.local/share/QGIS/QGIS3/profiles/default/python/plugins/koordinates/gui/koordinates.py", line 446, in init
if os.name == 'nt' or self.window().screen().devicePixelRatio() > 1:
AttributeError: 'QMainWindow' object has no attribute 'screen'

Python version: 3.8.10 (default, May 26 2023, 14:05:08) [GCC 9.4.0]
QGIS version: 3.26.3-Buenos Aires Buenos Aires, 65e4edfdad

Python Path:
/usr/share/qgis/python
/home/administrator/.local/share/QGIS/QGIS3/profiles/default/python
/home/administrator/.local/share/QGIS/QGIS3/profiles/default/python/plugins
/usr/share/qgis/python/plugins
/usr/lib/python38.zip
/usr/lib/python3.8
/usr/lib/python3.8/lib-dynload
/home/administrator/.local/lib/python3.8/site-packages
/usr/local/lib/python3.8/dist-packages
/usr/lib/python3/dist-packages
/home/administrator/.local/share/QGIS/QGIS3/profiles/default/python
/home/administrator/.local/share/QGIS/QGIS3/profiles/default/python/plugins/ee_plugin/extlibs_linux