URGENT - Web Publish Error

[richenri]

Can we access your project?

• I give permission for members of the FlutterFlow team to access and test my project for the sole purpose of investigating this issue.

Current Behavior

I opened ticket #32621572 48 hours ago and I haven't received a response. I need to publish teh application urgently.

I did some minor maintenance on the application, and when I tried to publish it to the web, the error below started appearing.

I can use it in LocalRun and have managed to publish it to both iOS and Android. The only thing that doesn't work is the web.

This started happening in version 6.2.3.

Target dart2js failed: ProcessException: Process exited abnormally with exit code 253:
Uncaught exception in diagnostic handler: FormatException: Unexpected extension byte (at offset 0)
#0 _Utf8Decoder.convertSingle (dart:convert-patch/convert_patch.dart:1855)
#1 Utf8Decoder.convert (dart:convert/utf.dart:351)
#2 Utf8BytesSourceFile.slowText (package:compiler/src/io/source_file.dart:189)
#3 SourceFile.lineStarts (package:compiler/src/io/source_file.dart:65)
#4 SourceFile.kernelSource (package:compiler/src/io/source_file.dart:32)
#5 SourceFile.getLocationMessage (package:compiler/src/io/source_file.dart:115)
#6 FormattingDiagnosticHandler.report (package:compiler/src/source_file_provider.dart:302)
#7 Compiler.callUserHandler. (package:compiler/src/compiler.dart:990) #8 CompilerTask.measure (package:compiler/src/common/tasks.dart:67) #9 Compiler.callUserHandler (package:compiler/src/compiler.dart:989) #10 Compiler._reportDiagnosticMessage (package:compiler/src/compiler.dart:969) #11 Compiler.reportDiagnostic (package:compiler/src/compiler.dart:948) #12 DiagnosticReporter._reportDiagnostic (package:compiler/src/diagnostics/diagnostic_listener.dart:175) #13 DiagnosticReporter.onError (package:compiler/src/diagnostics/diagnostic_listener.dart:330)

Expected Behavior

Publish the application

Steps to Reproduce

1. Go to App Settings
2. Select Web Deployment
3. Click in Publish

I authorize you to publish the Main Branch version. Actually, I need to publish it urgently.

Reproducible from Blank

• The steps to reproduce above start from a blank project.

Bug Report Code (Required)

IT40lsmBw5dgrs9J1oSJbsFFimU5Jm16R+cVjup7aCosfZT2BLMcec/RVERtOe2+SkFPfGCWkWoW0eyKuITDE/oVAymabrpqz7oBbxbLTXK6R4zSFJWgOnR8BZ9jJ2q+35+33RBANfhtdGQC3DmMHNiydDLvQee2OjA8Da/LZO4=

Visual documentation

Environment

- FlutterFlow version: 6.2.3
- Platform: Windows
- Browser name and version: Chrome
- Operating system and version affected: All

Additional Information

No response

[Alezanello]

Hello! 👋

It looks like your project may have some issues. To check and debug, you can download the project locally and run:

flutter run -d chrome

This should help you identify any errors directly.

[richenri]

Thanks for the Help.

I ran it locally and it didn't give me any errors. In fact, I'm able to run the app normally on Chrome, Edge, and Android. Only publishing to the web isn't working. From what I saw in your screenshot, it was still downloading the code. Could that be why you got an error?

I see this article with the some problem. The solution was update Flutter Version. How I Can update de Flutter Version?

dart-lang/sdk#60801

[richenri]

@Alezanello I ran the flutter build web command locally and got the same error. I updated the Flutter version to 3.35.2, and running the same command worked correctly. It's a problem with the Flutter version itself.

Is it possible for you to update the Flutter version in my project? Alternatively, can I publish it here by generating the version locally? I'm using the Flutterflow domain.

[richenri]

@Alezanello the screenshot with success

[Alezanello]

Hello!

It’s possible that you added a package from pub.dev that requires a newer Flutter version. There’s no way to manually change the Flutter version directly inside FlutterFlow, but you can always download the project code and compile it locally with your desired Flutter version.

[richenri]

@Alezanello My problem is that my application is published with FlutterFlow. I don't have a published server. Is there any way I can speed up updating the Flutter version in Flutterflow?

[Alezanello]

At the moment, this isn’t possible. FlutterFlow updates the Flutter version every few months, but we can’t confirm or promise when the next update will be available. In the meantime, I recommend reviewing the Flutter packages you’ve added and trying to downgrade their versions to maintain compatibility.