The Cys and Met residues are not recognized by the AMBER FF converted with AmberFFC. WHY?

Here are typical errors: Command: (Executing: Potentials Forcefield Fix -Print_Potentials Fix -Print_Part_Chargs Fix -Print_Form_Chargs TEST) Using template file 'AmberFFC/empty_templates. Dat' for potential assignment for residue TEST:5 Could not assign potential type to TEST:5:N Could not assign potential type to TEST:5:CA Could not assign potential type to TEST:5:HN Could not assign potential type to TEST:5:HA Could not assign potential type to TEST:5:C Could not assign potential type to TEST:5:O Could not assign potential type to TEST:5:CB Could not assign potential type to TEST:5:HB1 Could not assign potential type to TEST:5:HB2 Could not assign potential type to TEST:5:SG Could not assign potential type to TEST:5:LG1 Could not assign potential type to TEST:5:LG2 Could not assign potential type to TEST:5:HG3 Using template file 'AmberFFC/empty_templates. Dat' for potential assignment for residue TEST:13 Could not assign potential type to TEST:13:N Could not assign potential type ... more.

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