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App Switcher breaks inspector

See original GitHub issue

Error in event handler: Error: Assertion Failed: You attempted to remove a function listener which did not exist on the instance, which means you may have attempted to remove it before it was added.

The entire Inspector turns into a white screen.

Seems to be coming from this line: https://github.com/emberjs/ember-inspector/blob/master/app/routes/app-detected.js#L52

I believe updating to 3.11 is the culprit. This PR causes the error: https://github.com/emberjs/ember-inspector/pull/1000

Issue Analytics

State:
Created 4 years ago
Comments:13 (12 by maintainers)

Top GitHub Comments

1reaction

nummicommented, Dec 19, 2019

@chancancode, it’s getting better: no empty white screen. Unfortunately Inspector doesn’t switch apps and now I’m getting this error:

VM129:9027 Uncaught TypeError: Cannot read property '__deprecatedInstance__' of undefined
    at <anonymous>:9027:46
    at <anonymous>:138:9
    at Array.forEach (<anonymous>)
    at Class._messageReceived (<anonymous>:137:30)
    at <anonymous>:378:16
    at Backburner._run (backburner.js:1010)
    at Backburner.run (backburner.js:751)
    at run (index.js:122)
    at MessagePort.<anonymous> (<anonymous>:377:9)

Here’s the test app I’ve been using: https://github.com/nummi/inspector-test

It embeds the deprecation app in an iframe.

0reactions

patricklxcommented, Oct 4, 2022

should be fixed by https://github.com/emberjs/ember-inspector/pull/2157