fixed mongodb werror return errmsg (#1271)
fixed mongodb werror return errmsg (#1271)


hongling0/skynet,sanikoyes/skynet,xjdrew/skynet,korialuo/skynet,cloudwu/skynet,sanikoyes/skynet,xjdrew/skynet,icetoggle/skynet,korialuo/skynet,pigparadise/skynet,hongling0/skynet,xcjmine/skynet,icetoggle/skynet,cloudwu/skynet,wangyi0226/skynet,wangyi0226/skynet,cloudwu/skynet,pigparadise/skynet,sanikoyes/skynet,korialuo/skynet,xjdrew/skynet,xcjmine/skynet,xcjmine/skynet,pigparadise/skynet,hongling0/skynet,wangyi0226/skynet,icetoggle/skynet