/var/lib/material-modelling/.config/matplotlib is not a writable directory
Matplotlib created a temporary cache directory at /tmp/matplotlib-bp_si46g because there was an issue with the default path (/var/lib/material-modelling/.config/matplotlib); it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
/usr/bin/material-modelling:2993: DeprecationWarning: PhonopyAtoms.__init__ parameter of pbc is deprecated. It is considered always True.
  return phonopy.structure.atoms.PhonopyAtoms(
/usr/bin/material-modelling:2951: DeprecationWarning: Symmetry.get_symmetry_tolerance() is deprecated.Use tolerance attribute instead.
  symprec   = phonon.primitive_symmetry.get_symmetry_tolerance()
INFO: Reading configuration file /var/lib/material-modelling/data/NiHO2_625074.cif-EMT-stefanss-20260824-132722/config.toml.
INFO: Creating lattice/cell object from /var/lib/material-modelling/data/NiHO2_625074.cif-EMT-stefanss-20260824-132722/NiHO2_625074.cif.
INFO: supercell   = [2 2 2]
INFO: kpoints     = [3 3 3]
INFO: kpts_density= 2160
INFO: directory   = /var/lib/material-modelling/data/NiHO2_625074.cif-EMT-stefanss-20260824-132722
INFO: H4Ni2O4 Bravais lattice: MCL(a=3.16485, b=4.73215, c=5.4763, alpha=83.4818); Spacegroup: C 2 (5)
INFO: Starting computations in file:///var/lib/material-modelling/data/NiHO2_625074.cif-EMT-stefanss-20260824-132722 [Mon Aug 24 13:27:27 2026]
INFO: Using calculator EMT.
INFO: Computing ground state.
Traceback (most recent call last):
  File "/usr/bin/material-modelling", line 2035, in compute_electronic_dos
    dos   = ase.dft.dos.DOS(atoms.calc)
  File "/usr/lib/python3/dist-packages/ase/dft/dos.py", line 32, in __init__
    self.w_k = calc.get_k_point_weights()
               ^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'EMT' object has no attribute 'get_k_point_weights'
INFO: Computing electronic density of states.
WARNING: Failed computing the eDOS. Ignoring.
Traceback (most recent call last):
  File "/usr/bin/material-modelling", line 2101, in compute_electronic_band_structure
    bs = get_band_structure(calc=atoms.calc)
  File "/usr/lib/python3/dist-packages/ase/spectrum/band_structure.py", line 101, in get_band_structure
    kpts = calc.get_ibz_k_points()
           ^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'EMT' object has no attribute 'get_ibz_k_points'
INFO: Computing electronic band structure 1d.
WARNING: Failed computing the 1d electronic band structure along BZ path. Ignoring.
INFO: Saving results into file:///var/lib/material-modelling/data/NiHO2_625074.cif-EMT-stefanss-20260824-132722 [Mon Aug 24 13:27:28 2026]
INFO: Report available at file:///var/lib/material-modelling/data/NiHO2_625074.cif-EMT-stefanss-20260824-132722/README.html