Process Sage illegal instruction: 4 [closed]

edit

If this is a known bug, I've not been able to find a solution. Please advice.

I get this error:

Process Sage illegal instruction: 4

when I run this code:

from matplotlib import rc
g=Graph({1:[2,3], 2:[1,3], 3:[1,2]});
latex(g.plot(figsize=[2,2],vertex_size=450,layout='spring',color_by_label=True));

It used to run. This is not new code. The versions I'm running are:

Mac OS X El Capitan 10.11.6 (15G22010)

XCode Version 8.0 (8A218a)

SageMath version 8.3, Release Date: 2018-08-03

GNU Emacs 27.0.50 (build 1, x86_64-apple-darwin15.6.0, NS appkit-1404.47 Version 10.11.6 (Build 15G22010))

ob-sagemath 0.4

sage-shell-mode 0.3