on windows use the qtwebengine

[spuynen]

(Metobs_GUI) PS C:\Users\d16426> pip install PyQtWebEngine==5.12.1
Collecting PyQtWebEngine==5.12.1
  Downloading PyQtWebEngine-5.12.1-5.12.10-cp35.cp36.cp37.cp38.cp39-none-win_amd64.whl (49.7 MB)
     ---------------------------------------- 49.7/49.7 MB 5.5 MB/s eta 0:00:00
Requirement already satisfied: PyQt5>=5.12 in c:\users\d16426\anaconda\envs\metobs_gui\lib\site-packages (from PyQtWebEngine==5.12.1) (5.15.9)
Requirement already satisfied: PyQt5-sip<13,>=12.11 in c:\users\d16426\anaconda\envs\metobs_gui\lib\site-packages (from PyQt5>=5.12->PyQtWebEngine==5.12.1) (12.12.2)
Requirement already satisfied: PyQt5-Qt5>=5.15.2 in c:\users\d16426\anaconda\envs\metobs_gui\lib\site-packages (from PyQt5>=5.12->PyQtWebEngine==5.12.1) (5.15.2)
Installing collected packages: PyQtWebEngine
Successfully installed PyQtWebEngine-5.12.1