This is a problem related to microiterations (ONIOM only), which can't handle your system and can't converge the calcualtions. Two possible solutions:
1. change the geometry of your system, even slightly
2. use "opt=quadmacro iop(1/98=66,1/19=7)" or "opt=quadmacro iop(1/8=3,1/128=1,1/110=2,1/19=7,1/13=6)" to disable microiterations and let the system optimize for a number of steps. After that, stop the jobs and rerun it with your standard options.