#14 convert cif file for the elk geometry

[Miroslav Iliaš]

Hello, this is cif2cell version 2.0.0.

Got this error when trying to convert cif file for the elk geometry:

ilias@194.160.44.72:~/work/projects/valeria-band/MOH_on_quartz/TlOH_on_quartz/elk/prepare_input/.cif2cell -f  TlOHblock_on_fixedquartz.ams3d-ase.cif -p elk
Traceback (most recent call last):
  File "/home/milias/.local/bin/cif2cell", line 1404, in <module>
    docstring = StandardDocstring()
  File "/home/milias/.local/bin/cif2cell", line 1021, in StandardDocstring
    tmpstring2 += ". Reference number : "+ref.databasecode
TypeError: must be str, not NoneType