Hello App appears in the symphony layout but after clicking Add button it doesn't appear in the left menu nor it displays the views.
In webstorm editor it gives error
var helloControllerService = SYMPHONY.services.register("hello:controller");
^
ReferenceError: SYMPHONY is not defined
at Object. (c:\Users\developer\WebstormProjects\symphonyApp\src\javascript\controller.js:22:48)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:389:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:504:3