Matplotlib created a temporary config/cache directory at /tmp/matplotlib-4n92z18s 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.
INFO: Reading configuration file /var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/config.toml.
INFO: Creating lattice/cell object from /var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/Cu_mp-30_primitive.cif.
INFO: supercell   = [3 3 3]
INFO: kpoints     = [4 4 4]
INFO: kpts_density= 1728
INFO: directory   = /var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/
INFO: Cu Bravais lattice: FCC(a=3.62126); Spacegroup: F m -3 m (225)
INFO: Creating calculator QUANTUMESPRESSO.
INFO: Starting computations in file:///var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/ [Fri Jan 31 16:04:41 2025]
INFO: Computing ground state.
INFO: Computing electronic density of states.
INFO: Computing electronic band structure 1d.
INFO: Cu: Ef=13.0712 eV. Gap=52.50 meV.
INFO: Computing electronic band structure 3d.
INFO: Cu: Ef=12.4491 eV. Gap=64.00 meV.
INFO: Computing phonon density of states (small displacement method, Phonopy).
[Phonopy] Atomic displacements:
[Phonopy] 0 [0.01, 0.0, 0.0]
[Phonopy] Computing force constants.
[Phonopy] Computing '/var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/force-sets/sc-0000.npy'
[Phonopy] Building force constants matrix.
Max drift of force constants: -0.000000 (zz) -0.000000 (zz)
Max drift after symmetrization by translation: -0.000000 (zz) -0.000000 (zz)
[Phonopy] Writing force constants to '/var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/force-constants.npy'

[Phonopy] Phonon frequencies at Gamma:
[Phonopy]   1:   -0.00000 THz    -0.00000 meV
[Phonopy]   2:   -0.00000 THz    -0.00000 meV
[Phonopy]   3:    0.00000 THz     0.00000 meV
/usr/bin/material-modeling:607: RuntimeWarning:

divide by zero encountered in log10

INFO: Computing phonon dispersion along BZ path 1d (small displacement method, Phonopy).
[Phonopy] Atomic displacements:
[Phonopy] 0 [0.01, 0.0, 0.0]
[Phonopy] Reading force constants from '/var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/force-constants.npy'
/usr/bin/material-modeling:558: RuntimeWarning:

divide by zero encountered in log10

/usr/bin/material-modeling:382: RuntimeWarning:

invalid value encountered in scalar add

/usr/bin/material-modeling:383: RuntimeWarning:

invalid value encountered in scalar add

INFO: Computing phonon dispersion along BZ path 3d (small displacement method, Phonopy).
[Phonopy] Atomic displacements:
[Phonopy] 0 [0.01, 0.0, 0.0]
[Phonopy] Reading force constants from '/var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/force-constants.npy'
INFO: Saving results into file:///var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438/ [Fri Jan 31 16:05:33 2025]
INFO: Report available at file:///var/www/html/data/material-modeling/Cu_mp-30_primitive.cif-QuantumEspresso-farhie-20250131-160438//README.html