Spyder: No module named 'PyQt5.QtWebEngineWidgets' with anaconda on spyder 4.13

[matheusfillipe]

Procedure:
Fresh installed conda.

conda update anaconda
conda install spyder=4.1.3

Output:

$ /opt/anaconda/bin/spyder | xclip
Traceback (most recent call last):
  File "/opt/anaconda/lib/python3.7/site-packages/qtpy/QtWebEngineWidgets.py", line 22, in <module>
    from PyQt5.QtWebEngineWidgets import QWebEnginePage
ModuleNotFoundError: No module named 'PyQt5.QtWebEngineWidgets'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/anaconda/bin/spyder", line 11, in <module>
    sys.exit(main())
  File "/opt/anaconda/lib/python3.7/site-packages/spyder/app/start.py", line 201, in main
    from spyder.app import mainwindow
  File "/opt/anaconda/lib/python3.7/site-packages/spyder/app/mainwindow.py", line 84, in <module>
    from qtpy import QtWebEngineWidgets  # analysis:ignore
  File "/opt/anaconda/lib/python3.7/site-packages/qtpy/QtWebEngineWidgets.py", line 26, in <module>
    from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

I do have python-pyqtwebengine installed on my system. I am running arch linux.
I a lso have python on my system but i already tried removing PyQt5 and pyqtwebengine using my system's pip and reinstalling and in both ways i always had this same missing QtWebEngine error.

I saw many errors like this on the issues here and they always end up like that's not a spyder problem, but maybe we need better installing instructions?

[ccordoba12]

This is not issue with Spyder but with Anaconda. Please report it here:

https://github.com/ContinuumIO/anaconda-issues/issues/

[ccordoba12]

I saw many errors like this on the issues here and they always end up like that's not a spyder problem, but maybe we need better installing instructions?

I don't think so (installing Anaconda is quite straightforward). People just need to avoid mixing pip, conda and system packages (as it seems you're doing).

[matheusfillipe]

The fix for me was:
pip install PyQt5
Using the system wide pip and never run pip as root(pip for python 3, can be pip3 in some systems)
Then it still didn't work, then I reinstalled with:
pip uninstall PyQt5-sip
pip uninstall PyQt5
pip install PyQt5

All with the system python and it worked.

[MufaddalHamid]

Same problem but in windows 10 can someone help me solve it "No module named 'PyQt5.QtWebEngineWidgets'"

[dalthviz]

Hi @MufaddalHamid please check our Troubleshooting Guide maybe something there could be useful :)

[bbutler3]

This issue is still happening for me. The Troubleshooting Guide did not help. I have tried installing various versions of PyQt5, and I always get errors.

[bbutler3]

I did a fresh install of Anaconda (latest version) on Ubuntu 20.4. The resultant error when I run Spyder directly after install:

~$ spyder
Traceback (most recent call last):
  File "/home/bbutler3/anaconda3/lib/python3.8/site-packages/qtpy/QtWebEngineWidgets.py", line 22, in <module>
    from PyQt5.QtWebEngineWidgets import QWebEnginePage
ImportError: libXss.so.1: cannot open shared object file: No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/bbutler3/anaconda3/bin/spyder", line 11, in <module>
    sys.exit(main())
  File "/home/bbutler3/anaconda3/lib/python3.8/site-packages/spyder/app/start.py", line 201, in main
    from spyder.app import mainwindow
  File "/home/bbutler3/anaconda3/lib/python3.8/site-packages/spyder/app/mainwindow.py", line 84, in <module>
    from qtpy import QtWebEngineWidgets  # analysis:ignore
  File "/home/bbutler3/anaconda3/lib/python3.8/site-packages/qtpy/QtWebEngineWidgets.py", line 26, in <module>
    from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

Please provide advice if possible.

[bbutler3]

I have solved my issue. Sorry for the multiple comments, but I want to help anyone else who may run into this. I think it was a Ubuntu libraries problem. After sudo apt-get install libxss1 to fix the ImportError, I got another one that was basically identical:
ImportError: libEGL.so.1: cannot open shared object file: No such file or directory
It took a little digging to find the right package this time, but I did sudo apt-get install libegl1-mesa, and Spyder worked after that! I'm using WSL 2 here, so I did have to fiddle with my X display settings, but that's a different issue. Anyway, I hope this helps anyone who may come looking, and saves the Spyder developers from more work in explaining.

[MufaddalHamid]

I solved my issue by getting fresh installation of python and anaconda i.e python 3.9 and anaconda 3

[mvazquezmassaro]

@bbutler3. I have the same problem!!! tried to fix it with your steps, but I can´t solve it :

Traceback (most recent call last):
File "/home/maxi/miniconda3/lib/python3.8/site-packages/qtpy/QtWebEngineWidgets.py", line 22, in
from PyQt5.QtWebEngineWidgets import QWebEnginePage
ImportError: libQt5WebEngineWidgets.so.5: cannot open shared object file: No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/maxi/miniconda3/bin/spyder", line 11, in
sys.exit(main())
File "/home/maxi/miniconda3/lib/python3.8/site-packages/spyder/app/start.py", line 208, in main
from spyder.app import mainwindow
File "/home/maxi/miniconda3/lib/python3.8/site-packages/spyder/app/mainwindow.py", line 84, in
from qtpy import QtWebEngineWidgets # analysis:ignore
File "/home/maxi/miniconda3/lib/python3.8/site-packages/qtpy/QtWebEngineWidgets.py", line 26, in
from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

It´s Spyder 4.2.0....could you help me please!?

[ccordoba12]

@mvazquezmassaro, that looks like an error in your installation. Please create a new environment and install Spyder on it, or remove and reinstall Miniconda again.