This may be related to bug 941826, even though I can reproduce it on a
headless server without NVidia graphics, using Xvfb.

I found two possible workarounds:

- Install libglvnd-dev package which will mask the real libGL.so.
- Add these three lines on top of your script: 
https://bugs.launchpad.net/ubuntu/+source/python-qt4/+bug/941826/comments/21.

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https://bugs.launchpad.net/bugs/1761708

Title:
  QWebEngineView crashes

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