[gmx-users] help me

[Rob Jehan]

 In simulation  using  following command 
grompp -f minim.mdp -c dppc128.gro -p topol_dppc.top -o em.tpr 
 i need to convert dppc128.pdb to dppc128.gro using this command 

pdb2gmx -f dppc128.pdb -o dppc128.gro -ignh -ter -water spc but
now i am getting this fatal error.
Fatal error:There were46 missing atoms in molecule Other, if you want to use thisincomplete topology anyhow, use the option -missing
please sort it out