[gmx-users] The grompp problem!! (Urgently)

[Yuranat Saikatikorn]

I am doing the Drug-enzyme tutorial.
I also generated the drg.itp, drg.gro files using PRODRG server.
However, when I use the grompp command before the energy minimization
I face some error

      >A fatal error was shown: atom types CR61 not found

The atom type CR61 is presented in the drg.itp file that I included to
.top file before using grompp.

What should I do to get through this error?

Many thanks

Yuranat,
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