Error: Uncaught (in promise): false errors

[basvdijk]

Ionic version: (check one with "x")
[ ] 1.x
[ ] 2.x
[X] 3.x

I'm submitting a ... (check one with "x")
[X] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or http://ionicworldwide.herokuapp.com/

Current behavior:

In general I see a lot errors in Sentry of which I think are all related to toast and popups. Which might also be related to the NavController. I cannot reproduce these since they occur on my customers app installations.

Error: Uncaught (in promise): false
  at g (/build/polyfills.js:3:7133)
  at l (/build/polyfills.js:3:6251)
  at l (/build/polyfills.js:3:5937)
  at None (/build/polyfills.js:3:6765)
  at t.invokeTask (/build/polyfills.js:3:15213)

Error: Uncaught (in promise): false
  at g (/android_asset/www/build/polyfills.js:3:7133)
  at l (/android_asset/www/build/polyfills.js:3:6251)
  at None (/android_asset/www/build/polyfills.js:3:5607)
  at Object.e.reject (/android_asset/www/build/main.js:25:10925)
  at t._postViewInit (/android_asset/www/build/main.js:25:13148)

Expected behavior:

Ionic info: (run ionic info from a terminal/cmd prompt and paste output below):

Cordova CLI: 6.5.0
Ionic Framework Version: 3.0.1
Ionic CLI Version: 2.2.2
Ionic App Lib Version: 2.2.1
Ionic App Scripts Version: 1.3.3
ios-deploy version: Not installed
ios-sim version: 5.0.13
OS: OS X El Capitan
Node Version: v7.2.0
Xcode version: Xcode 8.2.1 Build version 8C1002

[manucorporat]

@basvdijk Are you using ionViewCanLeave or ionViewCanEnter?

[basvdijk]

@manucorporat No nothing of these two. I had this problem before, first I had:

toast.present();
this.nav.pop();

then later I tried

this.nav.pop().then(() => toast.present());

[manucorporat]

So you don't use ionViewCanLeave/ionViewCanEnter in your app at all?

why do you think it is related with Toast?

[manucorporat]

this.nav.pop().then(() => toast.present());

works but:

toast.present();
this.nav.pop();

does not?

[basvdijk]

No they both work, I thought the problem was the present() was not finished while I already was navigating to another page.

I use Alert and Toast through my app. I've got the Uncaught (in promise): false sometimes while developing. This was when I wanted to show a toast or an alert. Therefore I thought it is related to one of these when I saw the same errors in Sentry.

Also since the error doesn't occur all the time and imho quite random I guess it could be a race condition. This race condition could make sense for presenting a toast and navigating away from the page.

[ionitron-bot]

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