Solvation free energy task failed

Hi

I want to do the solvation free energy calculation with Forcite, but I failed. Then I tried run the three contributions seperately, I got the results for van der Waals and Electrostatic. But for Ideal, I got the following error:

Geometry optimization finished with an error condition.

I've already equilibriated the input structure with 2ns NVT. Does anyone have some suggestion about that? Thank you.

Regards,

Jingjing