Error- invalid args for pair coefficients

Dear Sir,
I am getting this error while running the below given program.
Can u please help me.

ERROR: Incorrect args for pair coefficients (…/pair_eam_alloy.cpp:52)

units metal
atom_style atomic
echo both
boundary p p p
dimension 3

lattice fcc 3.52
region whole block 0 10 0 10 0 10
create_box 1 whole
create_atoms 1 region whole
pair_style eam
pair_coeff * * Ni_u3.eam Ni

You’re using the pair coeff format for style eam/alloy, not style eam.