added httpAddr default when domain name is missing

cmd/serve.go

@@ -29,6 +29,10 @@ func NewServeCommand(app core.App, showStartBanner bool) *cobra.Command {
 				if httpsAddr == "" {
 					httpsAddr = "0.0.0.0:443"
 				}
+			} else {
+				if httpAddr == "" {
+					httpAddr = "127.0.0.1:8090"
+				}
 			}
 
 			_, err := apis.Serve(app, apis.ServeConfig{