build_runner failed after upgrading my flutter

[casontek]

i am unable to generate my model file after upgrading my flutter and dart sdk

dart --version
Dart SDK version: 3.5.0-103.0.dev (dev) (Thu Apr 25 17:03:06 2024 -0700) on "macos_x64"

flutter --version
Flutter 3.22.0-18.0.pre.30 • channel master • https://github.com/flutter/flutter.git
Framework • revision 5f0628d335 (11 days ago) • 2024-04-26 02:23:26 -0400
Engine • revision d794580077
Tools • Dart 3.5.0 (build 3.5.0-103.0.dev) • DevTools 2.35.0-dev.8

pubspec.yaml

environment:
sdk: '>=3.3.0-273.0.dev <4.0.0'

dev_dependencies:
flutter_test:
sdk: flutter
bloc_test: ^9.1.3
build_runner: ^2.4.9
json_serializable: ^6.7.1

model object

import 'package:json_annotation/json_annotation.dart';

part 'p_user.g.dart';

@JsonSerializable()
class User {
String name;
String phone;
String state;
String country;
String address;

User({
this.name = '',
this.phone = '',
this.country = '',
this.address = ''
});

factory User.fromJson(Map<String, dynamic> json) => _$UserFromJson(json);

Map<String, dynamic> toJson() => _$UserToJson(this);

}

Build Error

[INFO] Precompiling build script... completed, took 147ms
[SEVERE] Failed to precompile build script .dart_tool/build/entrypoint/build.dart.
This is likely caused by a misconfigured builder definition.

[dawid-niedzwiecki]

Same issue here with Flutter 3.24.0 (latest stable release)

[piotrkovsy1331]

Sadly I'm facing the same issue.

[Szymon3125]

i have the same issue
full error message after running dart run build_runner build --delete-conflicting-outputs:

[INFO] Entrypoint:Generating build script...
[INFO] Entrypoint:Generating build script completed, took 145ms

[INFO] Bootstrap:Precompiling build script......
Could not find a command named "/Users/username/flutter/bin/cache/dart-sdk/bin/snapshots/frontend_server.dart.snapshot".

Usage: dart <command|dart-file> [arguments]

Global options:
-v, --verbose               Show additional command output.
    --version               Print the Dart SDK version.
    --enable-analytics      Enable analytics.
    --disable-analytics     Disable analytics.
    --suppress-analytics    Disallow analytics for this `dart *` run without changing the analytics configuration.
-h, --help                  Print this usage information.

Available commands:
  analyze    Analyze Dart code in a directory.
  compile    Compile Dart to various formats.
  create     Create a new Dart project.
  devtools   Open DevTools (optionally connecting to an existing application).
  doc        Generate API documentation for Dart projects.
  fix        Apply automated fixes to Dart source code.
  format     Idiomatically format Dart source code.
  info       Show diagnostic information about the installed tooling.
  pub        Work with packages.
  run        Run a Dart program.
  test       Run tests for a project.

Run "dart help <command>" for more information about a command.
See https://dart.dev/tools/dart-tool for detailed documentation.
[INFO] Bootstrap:Precompiling build script... completed, took 121ms

[SEVERE] Bootstrap:
Failed to precompile build script .dart_tool/build/entrypoint/build.dart.
This is likely caused by a misconfigured builder definition.

[kevmoo]

have you tried running dart pub upgrade?

[jakemac53]

You need the latest frontend_server_client package (this is a transitive dependency). Running dart pub upgrade (or flutter pub upgrade) should do the trick.

[robot-den]

dart pub upgrade helped.

I will write our error, so after search indexing some devs finds this page faster

Error: No named parameter with the name 'isNonNullableByDefault'
Context: Found this candidate, but the arguments don't match.

[kevmoo]

Very thoughtful, @robot-den !! 🙏

[ROD-MASAMI]

@robot-den God bless you

[FullStackMusa]

have you tried running dart pub upgrade?

Work for me, Thanks @kevmoo 👏