fix nil error in get default watchers or default customers
fix nil error in get default watchers or default customers

ari/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,ari/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,rafaspinola/jobsworth,digitalnatives/jobsworth,ari/jobsworth,rafaspinola/jobsworth,rafaspinola/jobsworth,ari/jobsworth,webstream-io/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,rafaspinola/jobsworth