polish the error handler
polish the error handler

Signed-off-by: Dong Gang <3fd82b42290bb63edd6d2cc5848eb512a097288b@daocloud.io>

michelleN/deployment-manager,michelleN/deployment-manager,michelleN/deployment-manager,michelleN/deployment-manager,bacongobbler/helm,adamreese/helm,adamreese/helm,helm/helm,helm/helm,bacongobbler/helm