AttributeError: module 'Orange.widgets.gui' has no attribute 'WebviewWidge

[JoaoGabrielTN]

orange 3.3
orange-text 1.15.0
OS linux mint victoria
run it with the "python3 -m Orange.canvas" command

Expected behavior
It's suposed to create a worcloud from a corpus file.

Actual behavior
when run it appears an error message: 'Orange.widgets.gui' has no attribute 'WebviewWidget'.

Steps to reproduce the behavior
Create corpus
link corpus to preprrocessing text
link preprocessing to wordcloud
try to open wordcloud

[JoaoGabrielTN]

I solved it by installing webview through "pip3 install pywebview[qt]". The wordcloud widget opens, but does not show the wordcloud.

[markotoplak]

The thing to install is actually pyqtwebegine. The problem stems from the fact that we could not add PyQt as a dependency of the pip package because that leads to other problems.

How to install pyqtwebegine depends on how PyQt was installed.

• If you are using your system's system python installation directly and if your PyQt came with your Linux distribution, install the proper distribution package.

• If you installed PyQt it from pip, then continue with pip. But first, you will need to know which version of PyQt you have: run pip3 freeze | grep -i pyqt

  • If you see PyQt5 in the results, install pyqtwebengine: pip3 install pyqtwebengine

  • If you see PyQt6 in the results, install it so: pip3 install pyqt6-webengine

Thanks for opening the issue. I'll also check our installation instructions to see how we can improve them. Please report if any of these helped.

[JoaoGabrielTN]

It still doesn't appear.

after i run pip3 freeze | grep -i pyqt:

PyQt5==5.15.10
PyQt5-Qt5==5.15.2
PyQt5-sip==12.13.0
pyqtgraph==0.13.3
PyQtWebEngine==5.15.6
PyQtWebEngine-Qt5==5.15.2

I already have PyQt5 and pyqtwebengine. I reinstalled, both via pip3 and apt, and it did not solve the problem. I also tried to install pyqt6 and pyqt6-webengine, but with no success.

i run orange trough the command:
orange-canvas

[ales-erjavec]

@JoaoGabrielTN Can you try runing

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu --no-sandbox" orange-canvas

[markotoplak]

@JoaoGabrielTN, could you also try to see if the reports work? Open the File widget and click the report icon (third small icon at the bottom). Something like this should show up.

If you see a File description on the right, the problem is likely isolated to Text mining widgets.

[JoaoGabrielTN]

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu --no-sandbox" orange-canvas

Thank you, this resolved the problem. The wordcloud now appears when I plot it.

[markotoplak]

@JoaoGabrielTN, can you perhaps try if it also works if you only use a single flag? Or do you need both?

@ales-erjavec, why does this work? What was your idea when you suggested the solution?

[markotoplak]

With new version of PyQT5 I now need QTWEBENGINE_CHROMIUM_FLAGS="--no-sandbox" web engine to work.