Cannot read property 'helpers' of undefined

[jhonnydv]

I have followed step1 of the simple-todo tutorials. I am getting the above error.
My meteor version is 2.2

<img width="1381" alt="Screenshot 2021-04-22 at 11 51 40 AM" src="https://user-images.githubusercontent.com/8307205/115665612-2736f380-a361-11eb-8ab4-7b9b2798bb45.png">

App.js:5 Uncaught TypeError: Cannot read property 'helpers' of undefined
    at module (App.js:5)
    at fileEvaluate (modules-runtime-hot.js?hash=d12281259a6cee99786429a66f76b05f13449c7f:388)
    at Module.require (modules-runtime-hot.js?hash=d12281259a6cee99786429a66f76b05f13449c7f:270)
    at Module.moduleLink [as link] (modules.js?hash=96663f369b0a9c541aa7c5308be3c254ee8acf04:318)
    at module (main.js:1)
    at fileEvaluate (modules-runtime-hot.js?hash=d12281259a6cee99786429a66f76b05f13449c7f:388)
    at Module.require (modules-runtime-hot.js?hash=d12281259a6cee99786429a66f76b05f13449c7f:270)
    at require (modules-runtime-hot.js?hash=d12281259a6cee99786429a66f76b05f13449c7f:310)
    at app.js?hash=093c56d9d175fe84e05179e17cdc8da63738bcca:126```

[jhonnydv]

https://blaze-tutorial.meteor.com/simple-todos/01-creating-app.html

In the step it is mentioned that
Template.app
instead of Template.mainContainer