mkdir -p failed for path /var/www/.config/matplotlib: [Errno 13] Permission denied: '/var/www/.config'
Matplotlib created a temporary cache directory at /tmp/matplotlib-ucbzfrpt because there was an issue with the default path (/var/www/.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/lib/python3/dist-packages/ase/io/cif.py:408: UserWarning: crystal system 'cubic' is not interpreted for space group Spacegroup(225, setting=1). This may result in wrong setting!
  warnings.warn(
INFO: Reading configuration file /var/www/html/data/material-modeling/Al.cif-QuantumEspresso-farhie-20260530-110550/config.toml.
INFO: Creating lattice/cell object from /var/www/html/data/material-modeling/Al.cif-QuantumEspresso-farhie-20260530-110550/Al.cif.
INFO: supercell   = [2 2 2]
INFO: kpoints     = [4 4 4]
INFO: kpts_density= 2048
INFO: directory   = /var/www/html/data/material-modeling/Al.cif-QuantumEspresso-farhie-20260530-110550
INFO: Al4 Bravais lattice: CUB(a=4.0339); Spacegroup: F m -3 m (225)
Traceback (most recent call last):
  File "/usr/bin/material-modeling", line 3345, in <module>
    atoms, calculator = set_calculator(atoms, settings) # also stored as settings['Atoms'].calc
                        ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/usr/bin/material-modeling", line 1874, in set_calculator
    calculator = set_calculator_espresso(settings, kpts)
  File "/usr/bin/material-modeling", line 1582, in set_calculator_espresso
    raise("ERROR: Quantum Espresso is not installed. Install it with 'apt install quantum-espresso quantum-espresso-data-sssp'")
TypeError: exceptions must derive from BaseException