Blank page with QWebEngineView

[Keith Edmunds]

When I try to use QWebEngineView the renderer exits with an error and (unsurprisingly) I get a blank white window and the web content doesn't show.

A "small but complete example that demonstrates the problem" is attached.

Output of code run from CLI:

$ ./web.py 
termination_type=2, exit_code=31
load started
progress n=0
termination_type=2, exit_code=31
progress n=100

Versions:

name = "pyqt5"
version = "5.15.9"
name = "pyqt5-qt5"
version = "5.15.2"
name = "pyqt5-sip"
version = "12.11.1"
name = "pyqtwebengine"
version = "5.15.6"
name = "pyqtwebengine-qt5"
version = "5.15.2"

Suggestions to help debug this would be very welcome.

Thanks.
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