The MWE.py below gives the error as per subject line
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# Laplace Eigenvalue Equation
import sys
from scipy import sparse
import primme
import importlib.util
from mpi4py import MPI
+
import numpy as np
import ufl
from dolfinx import fem, io, mesh
from dolfinx.fem import Function
from dolfinx.fem.petsc import LinearProblem
from ufl import ds, dx, grad, inner
from dolfinx.fem.petsc import assemble_matrix
DEG_U=7
V_U = fem.functionspace(mesh, (“Lagrange”,DEG_U))
Regards
Moritz