compass II Force field

I am getting following errors for 6x 2 TiO2 slab model under forcite energy simulations.
Energy contributors with missing parameters:
    Bond Stretch                : (o_ti ti4o)
    Angle Bend                  : (o_ti ti4o o_ti), (ti4o o_ti ti4o)
    Torsion                     : (o_ti ti4o o_ti ti4o)
    Inversion                   : (o_ti ti4o ti4o ti4o)

I am surprised to see these errors, because its just bare TiO2 model!!
can you help me to correct this!!