added dedicated try-except for scheduler sync
added dedicated try-except for scheduler sync

lianke123321/centinel,iclab/centinel,lianke123321/centinel,rpanah/centinel,ben-jones/centinel,rpanah/centinel,Ashish1805/centinel,rpanah/centinel,lianke123321/centinel,JASONews/centinel,iclab/centinel,iclab/centinel