[modeller_usage] Error in ALIGN_CODES(i)

Hello all,

When I try to model my protein-DNA complex, I get the error: _modeller.ModellerError: read_al_373E> Protein specified in ALIGN_CODES(i) was not found in the alignment file; ALIGN_CODES( 2) = 2AHN

But I see no mistake either in the alignment or the format. I've attached both the ALI file and model-ligand.py. Please help!!!