If you use Photini on Windows and run the installer or updater to get the latest version it may update the PyQt5 library as well. Unfortunately the latest version of PyQt5 for windows does not include the QtWebEngine (or older QtWebKit) component that Photini needs to display maps.
If you get a message ending with "ImportError: cannot import name 'QtWebKit'" then you should downgrade PyQt5. Run the command window again, but as administrator, and run the following command:
pip install PyQt5==5.10.1
This should install an older version of PyQt5 that is known to work with Photini.
If you use Photini on Windows and run the installer or updater to get the latest version it may update the PyQt5 library as well. Unfortunately the latest version of PyQt5 for windows does not include the QtWebEngine (or older QtWebKit) component that Photini needs to display maps.
If Photini doesn't run after updating, try running it in a command window, as described in the documentation: https://photini.readthedocs.io/en/latest/other/installation.html#troubleshooting
If you get a message ending with "ImportError: cannot import name 'QtWebKit'" then you should downgrade PyQt5. Run the command window again, but as administrator, and run the following command:
pip install PyQt5==5.10.1
This should install an older version of PyQt5 that is known to work with Photini.