Expected 0 or 1 SymmetryDefinition for AMORPHOUS cell

Dear all,

when I use the Amorphous cell module to construct a peroodice cell, there is an error show that Expected 0 or 1 SymmetryDefinition in Message text,

and the task will be stop, I changed different forcefield, but it doesnot work,  How should I do to solve this problem?

the molcule is given in attachment

thank you !!

zhang