Issue with forward operator for eeg/pyvistaqt

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1
  • MNE version: e.g. 0.24.0
  • operating system: e.g. macOS 12

I am trying to follow the EEG forward operator tutorial with template MRI but for some reason there is an issue with pyvistaqt. I have installed it using pip install and if I run mne.sys_info() here is the output:

Platform: macOS-12.4-x86_64-i386-64bit
Python: 3.11.1 (v3.11.1:a7a450f84a, Dec 6 2022, 15:24:06) [Clang 13.0.0 (clang-1300.0.29.30)]
Executable: /usr/local/bin/python3.11
CPU: i386: 8 cores
Memory: 16.0 GB

mne: 1.3.0
numpy: 1.24.2 {OpenBLAS 0.3.21 with 4 threads}
scipy: 1.10.0
matplotlib: 3.6.3 {backend=MacOSX}

sklearn: 1.2.1
numba: Not found
nibabel: Not found
nilearn: Not found
dipy: Not found
openmeeg: Not found
cupy: Not found
pandas: 1.5.3
pyvista: 0.38.5 {OpenGL 4.1 INTEL-18.7.4 via Intel(R) Iris™ Plus Graphics 645}
pyvistaqt: 0.9.1
ipyvtklink: Not found
vtk: 9.2.6
qtpy: Not found
ipympl: Not found
pyqtgraph: Not found
pooch: v1.6.0

When I run the tutorial code, or my adapted code with my data, I get this error message:

RuntimeError: Could not load any valid 3D backend
pyvistaqt: No Qt bindings could be found

And it asks me to install pyvistaqt - but it seems like its already there. Any ideas why this might be happening?

2

Hi,

Your MNE installation seems wrong. Some of the dependencies are missing.
I would suggest you to do a fresh installation.

For installation, you can have a look here:
https://mne.tools/stable/install/index.html

best,