[HELP]: MISMATCHED ANONYMOUS DEFINE() MODULES ERROR

[kareem-darwinz]

Hello,

I've implemented a simple player that plays one sound in a new flutter web project and it works well. I've added the same code to a project I'm working on that includes firebase libraries (like firebase core for instance). Whenever I run the code in debug mode, I get this error, and if I refresh (hot reload), the error goes away and the app runs normally. I've deployed the code and it worked fine. What is this error and how can i get rid of it?

Error: Mismatched anonymous define() module: function() { return { Howler: Howler, Howl: Howl }; } http://requirejs.org/docs/errors.html#mismatch at makeError (http://localhost:59376/require.js:168:17) at intakeDefines (http://localhost:59376/require.js:1254:36) at Object.localRequire [as require] (http://localhost:59376/require.js:1446:21) at requirejs (http://localhost:59376/require.js:1797:24) at Function.req.config (http://localhost:59376/require.js:1805:16) at js.JsFunction._fromJs.callMethod (http://localhost:59376/dart_sdk.js:66027:35) at firebase_core_web.FirebaseCoreWeb.new._initializeCoreRequireJs (http://localhost:59376/packages/firebase_core_web/firebase_core_web.dart.lib.js:201:17) at _initializeCoreRequireJs.next (<anonymous>) at runBody (http://localhost:59376/dart_sdk.js:42630:34) at Object._async [as async] (http://localhost:59376/dart_sdk.js:42661:7) at firebase_core_web.FirebaseCoreWeb.new.[_initializeCoreRequireJs] (http://localhost:59376/packages/firebase_core_web/firebase_core_web.dart.lib.js:194:20) at firebase_core_web.FirebaseCoreWeb.new.initializeApp (http://localhost:59376/packages/firebase_core_web/firebase_core_web.dart.lib.js:227:47) at initializeApp.next (<anonymous>) at runBody (http://localhost:59376/dart_sdk.js:42630:34) at Object._async [as async] (http://localhost:59376/dart_sdk.js:42661:7) at firebase_core_web.FirebaseCoreWeb.new.initializeApp (http://localhost:59376/packages/firebase_core_web/firebase_core_web.dart.lib.js:223:20) at initializeApp (http://localhost:59376/packages/firebase_core/firebase_core.dart.lib.js:111:59) at initializeApp.next (<anonymous>) at runBody (http://localhost:59376/dart_sdk.js:42630:34) at Object._async [as async] (http://localhost:59376/dart_sdk.js:42661:7) at Function.initializeApp (http://localhost:59376/packages/firebase_core/firebase_core.dart.lib.js:110:20) at main$ (http://localhost:59376/packages/rest_interface/app/modules/unavail/views/unavail_view.dart.lib.js:7975:36) at main$.next (<anonymous>) at runBody (http://localhost:59376/dart_sdk.js:42630:34) at Object._async [as async] (http://localhost:59376/dart_sdk.js:42661:7) at main$ (http://localhost:59376/packages/rest_interface/app/modules/unavail/views/unavail_view.dart.lib.js:7973:18) at main (http://localhost:59376/web_entrypoint.dart.lib.js:39:29) at main.next (<anonymous>) at http://localhost:59376/dart_sdk.js:42610:33 at _RootZone.runUnary (http://localhost:59376/dart_sdk.js:42466:58) at _FutureListener.thenAwait.handleValue (http://localhost:59376/dart_sdk.js:37033:29) at handleValueCallback (http://localhost:59376/dart_sdk.js:37636:49) at Function._propagateToListeners (http://localhost:59376/dart_sdk.js:37674:17) at _Future.new.[_completeWithValue] (http://localhost:59376/dart_sdk.js:37516:23) at http://localhost:59376/dart_sdk.js:36647:46 at _RootZone.runUnary (http://localhost:59376/dart_sdk.js:42466:58) at _FutureListener.then.handleValue (http://localhost:59376/dart_sdk.js:37033:29) at handleValueCallback (http://localhost:59376/dart_sdk.js:37636:49) at Function._propagateToListeners (http://localhost:59376/dart_sdk.js:37674:17) at _Future.new.[_completeWithValue] (http://localhost:59376/dart_sdk.js:37516:23) at async._AsyncCallbackEntry.new.callback (http://localhost:59376/dart_sdk.js:37539:35) at Object._microtaskLoop (http://localhost:59376/dart_sdk.js:42771:13) at _startMicrotaskLoop (http://localhost:59376/dart_sdk.js:42777:13) at http://localhost:59376/dart_sdk.js:37905:9

[GeorgeAmgad]

Same problem here. I assume this started from 9.1.1

[Larpoux]

I don't really understand what the reason of this issue is. The major (only) change done on 9.1 for Flutter web is that the libraries are dynamically, loaded from the asset directory. You must not put anymore includes in your index.html

[Larpoux]

I think the problem is because two different libraries are loaded. Please check that you don't include/import/require anymore any Flutter Sound and Howler libraries in your index.html. And tell us if this is better.

[GeorgeAmgad]

I removed the added .js files from index.html but the problem still persists. however it runs normally after initiating hot restart.

[dius00]

@GeorgeAmgad @kareem-darwinz Did you have any luck solving the issue? I'm having the same issues, there are no imports in the index.html and I also ran a flutter clean, the issue persists after a hot restart as well.

Edit: Are you both using Firebase? Debugging this seems that the error is thrown by the _initializeCoreRequireJs() when initializing a firebase App.

[GeorgeAmgad]

Yes, it was conflicting with firebase .. I had to fall back to ^8.5.0 and include the js files in index.html when things got more messy.

[Larpoux]

Do you know if firebase depends on the Howler library?

[Larpoux]

I am going to work on this issue during the next few days. (today and probably tomorrow i don't have access to my computer)

[GeorgeAmgad]

Do you know if firebase depends on the Howler library?

Not 100% sure but it seems like it does, as the conflict is between firebase_core and flutter_sound.

[dius00]

Do you know if firebase depends on the Howler library?

While at a first glance it would look like it does as the conflict is between firebase_core and flutter_sound. However, at first glance https://github.com/FirebaseExtended/flutterfire/tree/master/packages/firebase_core it doesn't seem like firebase_core_web has howler listed as a dependency.

[dius00]

@Larpoux Have you had the chance to look into the issue? We are currently still stuck on pre-9 due to this issue, any input would be appreciated.

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