Error: Rank mismatch between actual argument at (1) and actual argument at (2) (scalar and rank-1)
scipy/sparse/linalg/eigen/arpack/ARPACK/SRC/cnaitr.f:737:39: 
...
Error: Rank mismatch between actual argument at (1) and actual argument at (2) (scalar and rank-1)  error: Command "/usr/bin/x86_64-pc-linux-gnu-gfortran -Wall -g -ffixed-form -fno-second-underscore -fPIC -march=haswell -O2 -pipe -fPIC -Iscipy/sparse/linalg/eigen/arpack/ARPACK/SRC -I/usr/lib/python3.9/site-packages/numpy/core/include -I/var/tmp/portage/sci-libs/scipy-1.1.0/work/scipy-1.1.0-python3_9/build/src.linux-x86_64-3.9/numpy/distutils/include -c -c scipy/sparse/linalg/eigen/arpack/ARPACK/SRC/cnaitr.f -o /var/tmp/portage/sci-libs/scipy-1.1.0/work/scipy-1.1.0-python3_9/build/temp.linux-x86_64-3.9/scipy/sparse/linalg/eigen/arpack/ARPACK/SRC/cnaitr.o" failed with exit status 1