Error after PyMFEM install

[436ahsan]

I recently installed PyMFEM in my M1 mac and after installation, when I tried running the example to solve div(alpha grad(u)) = f in a square and to plot the result with matplotlib (modified from ex1.cpp) I am getting the following error:

That means mfem is running but not properly I think. Any ideas what could be the reason?

[mshaocong]

I met the same problem. The output of mesh.GetVertexArray() is a tuple not an array. Adding verts=np.vstack(verts) will fix this problem.