Hello. I want to calculate dispersion curves for vdWH systems. I am trying it using quantum espresso with DFT-D vdw_correction. scf.in, ph.in, q2r.in are running fine, but when i do matdyn.x, calculation just stops without any error or crash. The problem can be seen in the attached picture. Kindly suggest or please guide for a proper calculation of phonon for vdWH system. Eagerly waiting for yours guidance. Thank you.