Seg fault in afqmc run

**Describe the bug**
afqmc simulation seg faults

**To Reproduce**
LLVM 12.0 and QMCPACK v3.14.
1. Build the docker image from attached file.
2. Go to sample path: cd qmcpack/examples/afqmc/01-neon_atom/
3. Run afqmc,
python scf.py > scf.out
export PYTHONPATH=/utils/afqmctools:$PYTHONPATH
/utils/afqmctools/bin/pyscf_to_afqmc.py -i scf.chk -o afqmc.h5 -t 1e-5 -v
python gen_input.py
qmcpack_complex afqmc.xml

**Expected behavior**
Run without seg fault.

**System:**

**Additional context**