[Phonopy-users] Error: Input forces are not enough to calculate force constants

[Ankit J. <ank...@gm...>]

Dear All,

I am trying to simple calculation of disperion using 4*4*4 supercell. I
encountered this error:
Input forces are not enough to calculate force constants

As I count, it looks like all forces are there in the FORCE_SETS file. I am
lost and is not sure about the source of error. Can anyone please help me
here.

I am attaching all relevant files here.

Thanks,
Ankit Jain
IIT Kanpur,
India