Hi,
when trying to run SM_black_hole_rendering.ipynb
https://nbviewer.jupyter.org/github/sagemanifolds/SageManifolds/blob/master/Notebooks/SM_black_hole_rendering.ipynb
the cell 28 does not execute well
Process PoolWorker-1: Traceback (most recent call last): File "/Applications/SageMath-8.7.app/Contents/Resources/sage/local/lib/python2.7/multiprocessing/process.py", line 267, in _bootstrap self.run() ...
Can anyone help ?
Thank you
Epi