Code from the FENICSx tutorial went wrong on local computer

Errors
1

Hi, I’m new on FENICSx and trying to run the examples in the tutorial to compute stress The equations of linear elasticity.

But error encountered while implementing stress_expr = fem.Expression(von_Mises, V_von_mises.element.interpolation_points()) in the copying code snippets. Could you please tell me the reason for this error？ Thanks a lot!

Traceback (most recent call last):
  File "/mnt/d/test.py", line 227, in <module>
    stress_expr = fem.Expression(von_Mises, V_von_mises.element.interpolation_points())
TypeError: 'numpy.ndarray' object is not callable
2

You are probably running another release than what the web page covers (0.6.x).

If you are running anything newer, please look at the raw code in the branch:

or check out the appropriate version at

3

Thank you very much! I’ll check it.