Setting up Environment and Obtaining .tpr files

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GROMACS version:
GROMACS modification: Yes/No
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I am having trouble with the execution of this line of code: gmx grompp -f ions.mdp -c solv.gro -p topol.top -o ions.tpr. A list of the all the possibilities of why this didn’t work would be great. I am getting the error on the image displayed.

image
image1254×562 43.6 KB

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There are nearly endless possibilities for why this is happening. Most likely, as you are at the solvation step, this is due to the system being not neutrally charged. Please report the error you are getting.