Handle nil service (#1990)
Handle nil service (#1990)


rjtsdl/acs-engine,rjtsdl/acs-engine,Azure/acs-engine,rjtsdl/acs-engine,yangl900/acs-engine,Azure/acs-engine,yangl900/acs-engine,jackfrancis/acs-engine,rjtsdl/acs-engine,yangl900/acs-engine,rjtsdl/acs-engine,jackfrancis/acs-engine,rocketraman/acs-engine,rocketraman/acs-engine,jackfrancis/acs-engine,rocketraman/acs-engine,yangl900/acs-engine,Azure/acs-engine,rocketraman/acs-engine,jackfrancis/acs-engine,Azure/acs-engine,yangl900/acs-engine,Azure/acs-engine,jackfrancis/acs-engine