Matplotlib created a temporary config/cache directory at /tmp/matplotlib-nyjh1jxz because the default path (/var/www/.config/matplotlib) is not a writable directory; 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/utils/__init__.py:62: FutureWarning: Please use atoms.cell.reciprocal()
  warnings.warn(warning)
INFO: Creating lattice/cell object from /var/www/html/data/material_modeling/La3Ni2O7.cif-QuantumEspresso-farhie-20231009-090749/La3Ni2O7.cif
INFO: supercell   = [1 1 1]
INFO: kpoints     = [3 3 3]
INFO: kpts_density= 1296
INFO: directory   = /var/www/html/data/material_modeling/La3Ni2O7.cif-QuantumEspresso-farhie-20231009-090749/
INFO: La12Ni8O28 Bravais lattive: ORC(a=5.45709, b=5.60627, c=20.313); Spacegroup: C m c m (63)
INFO: Creating calculator QUANTUMESPRESSO
INFO: Starting computations in file:///var/www/html/data/material_modeling/La3Ni2O7.cif-QuantumEspresso-farhie-20231009-090749/ [Mon Oct  9 09:07:50 2023]
INFO: Computing ground state.
INFO: Computing electronic density of states.
Note: The following floating-point exceptions are signalling: IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
INFO: Computing electronic band structure along BZ path.