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Flutter web not working at all #3086

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fisforfaheem opened this issue Apr 28, 2024 · 8 comments
Open

Flutter web not working at all #3086

fisforfaheem opened this issue Apr 28, 2024 · 8 comments
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@fisforfaheem
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Launching lib\main.dart on Edge in debug mode...
Warning: In index.html:37: Local variable for "serviceWorkerVersion" is deprecated. Use "{{flutter_service_worker_version}}" template token instead.
Warning: In index.html:46: "FlutterLoader.loadEntrypoint" is deprecated. Use "FlutterLoader.load" instead.
../../../AppData/Local/Pub/Cache/hosted/pub.dev/get-5.0.0-release-candidate-5/lib/get_navigation/src/routes/get_transition_mixin.dart:374:39: Error: Member not found: 'CupertinoRouteTransitionMixin.isPopGestureInProgress'.
CupertinoRouteTransitionMixin.isPopGestureInProgress(route);
^^^^^^^^^^^^^^^^^^^^^^
Failed to compile application.

Exited (1).

@fisforfaheem
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flutter 3.22

@nekomaruh
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nekomaruh commented May 14, 2024

Happens the same to me with auto_route dependency in flutter 3.22:
https://pub.dev/packages/auto_route

Update 16/05/24:
Apparently it is not a problem with the package, it is a problem with the latest version of Flutter, in my case it now always appears

Update 17/05/24:
I figured it out a solution for this warning. The problem seems to be with index.html in flutter web due to deprecated packages in Flutter 3.22:

  1. Inside <head> tag Replace:
<script>
    // The value below is injected by flutter build, do not touch.
    const serviceWorkerVersion = null;
</script>

By:

<script>
    // The value below is injected by flutter build, do not touch.
    const flutter_service_worker_version = null;
</script>
  1. And if you are using WebView embedding:

Inside <body> tag replace:

 <script>
    window.addEventListener('load', function(ev) {
      // Download main.dart.js
      _flutter.loader.loadEntrypoint({
        serviceWorker: {
          serviceWorkerVersion: serviceWorkerVersion,
        },
        onEntrypointLoaded: function(engineInitializer) {
          engineInitializer.initializeEngine().then(function(appRunner) {
            appRunner.runApp();
          });
        }
      });
    });
  </script>

By:

<script>
    window.addEventListener('load', function(ev) {
      // Download main.dart.js
      _flutter.loader.load({
        serviceWorker: {
          serviceWorkerVersion: serviceWorkerVersion,
        },
        onEntrypointLoaded: function(engineInitializer) {
          engineInitializer.initializeEngine().then(function(appRunner) {
            appRunner.runApp();
          });
        }
      });
    });
  </script>

Hope it helps :)

@aniketkhote9
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#3095

@corepuncher
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corepuncher commented May 21, 2024

My web build is busted. First I tried to address the flutter_service_worker_version error, and now when I build, in my index.html I have double quotes around the version value like this:

  <script>
    // The value below is injected by flutter build, do not touch.
    var serviceWorkerVersion = ""1234567899"";
  </script>

So then I manually delete the double quotes, and I still have the following errors:

flutter.js:3 Uncaught (in promise) FlutterLoader.load requires _flutter.buildConfig to be set

  <script>
    window.addEventListener('load', function (ev) {
      // Download main.dart.js
      _flutter.loader.load({
        serviceWorker: {
          serviceWorkerVersion: serviceWorkerVersion,
        },
        onEntrypointLoaded: function (engineInitializer) {
          engineInitializer.initializeEngine().then(function (appRunner) {
            appRunner.runApp();
          });
        }
      });
    });
  </script>

So it's like whack-a-mole at this point.

Any ideas what the root cause of this is? I used to be able to build web app fine, until upgrades.

@novaldebbyp
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@corepuncher
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Try to changed the index.html from this discussion https://stackoverflow.com/questions/78152396/how-do-i-replace-serviceworkerversion-with-flutter-service-worker-version

I had it like that basically (except had double quotes, tried changing to single...no difference).

A huge rabbit hole since trying to fix the serviceworker deprecation. I eventually reverted back to an old copy of index.html, and it works. So I will leave for now.

I wonder if I need to rebuild the web files , perhaps my files in that dir are too old (too many flutter versions ago)? And perhaps they changes several things by now.

@leferrad
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leferrad commented May 24, 2024

Inside <head> tag Replace:

@nekomaruh I tried your solution but I get this error ReferenceError: serviceWorkerVersion is not defined which makes sense given that variable is not defined.

@corepuncher
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Inside tag Replace:

@nekomaruh I tried your solution but I get this error ReferenceError: serviceWorkerVersion is not defined which makes sense given that variable is not defined.

For me the solution was to delete the contents of /web dir (backing up any mods to index.html) and then remake using:

flutter create --platforms web .

It was much easier than trying to fix all the changes that have occurred since I last made my project.

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