**** Too many failed attempts to optimise ****GULP

I'm new to Material Studio and I'm trying to use GULP to run geometry optimization on polymer with continuum solvent.

Everytime I ran a geometry optimization, it returned an error message of:

**** Too many failed attempts to optimise ****

I tried many approaches to solve this problem but this error consistently come out. I totally have no idea what this error means.

Do anyone has kind advice on this?