Error when following the book "Discover Meteor"

help
1

Hello guys, I am following the book “Discover Meteor.” Everything went fine until I add the Iron router, then I got this error and I don’t know what does it mean? Any help would be appreciated. Thank you and have a nice day. This is the error:

Exception in callback of async function: MiddlewareStack.prototype.concat@http://localhost:3000/packages/iron_middleware-stack.js?ff70621b6c5f6a406edc60600c4b76126dae21d6:303:7
RouteController.prototype._runRoute@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:542:11
Route.prototype.dispatch@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:856:10
Route/route@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:713:5
boundNext@http://localhost:3000/packages/iron_middleware-stack.js?ff70621b6c5f6a406edc60600c4b76126dae21d6:425:16
Meteor.bindEnvironment/<@http://localhost:3000/packages/meteor.js?9730f4ff059088b3f7f14c0672d155218a1802d4:999:17
dispatch@http://localhost:3000/packages/iron_middleware-stack.js?ff70621b6c5f6a406edc60600c4b76126dae21d6:449:3
RouteController.prototype.dispatch/</<@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:393:7
Tracker.Computation.prototype._compute@http://localhost:3000/packages/tracker.js?7776276660c988c38fed448d8262b925dffb5bc3:349:5
Tracker.Computation@http://localhost:3000/packages/tracker.js?7776276660c988c38fed448d8262b925dffb5bc3:237:5
Tracker.autorun@http://localhost:3000/packages/tracker.js?7776276660c988c38fed448d8262b925dffb5bc3:588:11
RouteController.prototype.dispatch/<@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:391:5
Tracker.nonreactive@http://localhost:3000/packages/tracker.js?7776276660c988c38fed448d8262b925dffb5bc3:615:12
RouteController.prototype.dispatch@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:390:3
Router.prototype.dispatch@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:1700:3
onLocationChange@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:1784:20
Tracker.Computation.prototype._compute@http://localhost:3000/packages/tracker.js?7776276660c988c38fed448d8262b925dffb5bc3:349:5
Tracker.Computation@http://localhost:3000/packages/tracker.js?7776276660c988c38fed448d8262b925dffb5bc3:237:5
Tracker.autorun@http://localhost:3000/packages/tracker.js?7776276660c988c38fed448d8262b925dffb5bc3:588:11
Router.prototype.start@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:1777:31
Router/</<@http://localhost:3000/packages/iron_router.js?dd5fa02859b6335661b94134bd9903be8eecf44d:980:9
.withValue@http://localhost:3000/packages/meteor.js?9730f4ff059088b3f7f14c0672d155218a1802d4:971:17
withoutInvocation/<@http://localhost:3000/packages/meteor.js?9730f4ff059088b3f7f14c0672d155218a1802d4:428:26
Meteor.bindEnvironment/<@http://localhost:3000/packages/meteor.js?9730f4ff059088b3f7f14c0672d155218a1802d4:999:17
onGlobalMessage@http://localhost:3000/packages/meteor.js?9730f4ff059088b3f7f14c0672d155218a1802d4:365:11

2

How to approach this kind of issues:

You know where the issue is located: Iron router. So first go to atmosphere and find the package: https://atmospherejs.com/iron/router

The click the Github link: https://github.com/iron-meteor/iron-router and go to issues. Every package has an issues page which gives you good insight in other users. I found this one:
https://github.com/iron-meteor/iron-router/issues/1443

In this case I think it’s an issue because you use Meteor 1.2 which is brand new. I see an author of Discover Meteor wrote a piece also there.

So: If you want to follow the tutorial you need an install of Meteor 1.1 until the issues have been fixed.