I'm getting the following error when doing the jdos and spectra calculation with epsilon.x in Quantum Espresso :

Error in routine epsilon (5010):

reading namelist ENERGY_GRID

I have used both nosym = .TRUE. , noinv = .TRUE. , in scf and jdos/spectra calculation, as suggested by many in the web.

Additional info: For this example calculation, I'm using NaF (FCC) structure with 216 atomic cell. I used the constant grid points (in K_POINTS {crystal_b}) with following FCC k-path: G—X—W—K—G—L—U—W—L—K|U—X (10 points for each). Any help/insight would be much appreciated. Thanks!