On Safari this errors with "a = Error: Pyodide already fatally failed and can no longer be used.", possibly because there is another error in one of the cells below: "TypeError: Invalid argument type in ToBigInt operation" (in "plt.figure"…)

I'm not able to reproduce that on Safari (14.1.2) on macOS (11.5). I am seeing the "TypeError: Invalid argument type in ToBigInt operation" error below in Safari. That probably is the result of my patching matplotlib's `plt.show`. Something might be happening out of order too, because if I re-run that cell, I get a different error: "Error: Internal error: Argument 'undefined' to hiwire.get_value is falsy (but error indicator is not set)."