Fix null ref on exception multi-handling
Fix null ref on exception multi-handling

mqbk/Opserver,opserver/Opserver,manesiotise/Opserver,jeddytier4/Opserver,GABeech/Opserver,opserver/Opserver,rducom/Opserver,jeddytier4/Opserver,mqbk/Opserver,GABeech/Opserver,maurobennici/Opserver,maurobennici/Opserver,manesiotise/Opserver,geffzhang/Opserver,rducom/Opserver,VictoriaD/Opserver,geffzhang/Opserver,VictoriaD/Opserver,opserver/Opserver,manesiotise/Opserver