Dear Jibiao, it looks like the phonon code cannot find the d3 hessian matrix.
When computing phonons with D3, you should run the d3hess program before phonon (and provide the file name with the dftd3_hess keyword). Documentation here: https://www.quantum-espresso.org/Doc/INPUT_D3HESS.html You can also try the automatic.hess option, documented here: https://www.quantum-espresso.org/Doc/INPUT_PH.html#idm56 but it is an experimental feature. Regards, IC
_______________________________________________ The Quantum ESPRESSO community stands by the Ukrainian people and expresses its concerns about the devastating effects that the Russian military offensive has on their country and on the free and peaceful scientific, cultural, and economic cooperation amongst peoples _______________________________________________ Quantum ESPRESSO is supported by MaX (www.max-centre.eu) users mailing list [email protected] https://lists.quantum-espresso.org/mailman/listinfo/users
