# A fatal error of dihedral angle when using amber14sb-parmsc1.ff

**URL:** <https://gromacs.bioexcel.eu/t/a-fatal-error-of-dihedral-angle-when-using-amber14sb-parmsc1-ff/6308>\
**Category:** User discussions\
**Tags:** forcefield\
**Created:** [April 30, 2023, 10:38am UTC](https://gromacs.bioexcel.eu/t/a-fatal-error-of-dihedral-angle-when-using-amber14sb-parmsc1-ff/6308 "2023-04-30T10:38:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![shine](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@shine](https://gromacs.bioexcel.eu/u/shine)\
**Post date:** [April 30, 2023, 10:38am UTC](https://gromacs.bioexcel.eu/t/a-fatal-error-of-dihedral-angle-when-using-amber14sb-parmsc1-ff/6308/1 "2023-04-30T10:38:11Z")

</div>

GROMACS version:2023  
GROMACS modification: Yes/No N0  
Hello everyone. Recently, I met a fatal error when run grompp. But this error will disappear if I use other force field. So I want to know how to solve this error in amber14sb-parmsc1.ff . Thank you very much.

 ![image](https://europe1.discourse-cdn.com/flex017/uploads/bioexcel1/original/2X/d/d70f2d6000e459d9be3d7495c3d13a376abf9848.png)