[SOLVED] Flutter Failed to build build_runner:build

Flutter Failed to build build_runner:build_runner:

I get this error when I try to run flutter pub run build_runner build. The last thing that I remember was changing the @JsonKey(name: "key") in one of my remote response class. This is my first time getting this error when running the build_runner.

What exactly happen in this error code? And how to fix it?

(edit)
I'm using Flutter version 3.19.2

Failed to build build_runner:build_runner:
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/source_visitor.dart:1287:38: Error: Type 'ExtensionTypeDeclaration' not found.
  void visitExtensionTypeDeclaration(ExtensionTypeDeclaration node) {
                                     ^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/source_visitor.dart:2629:43: Error: Type 'RepresentationConstructorName' not found.
  void visitRepresentationConstructorName(RepresentationConstructorName node) {
                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/source_visitor.dart:2635:39: Error: Type 'RepresentationDeclaration' not found.
  void visitRepresentationDeclaration(RepresentationDeclaration node) {
                                      ^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/source_visitor.dart:1287:38: Error: 'ExtensionTypeDeclaration' isn't a type.
  void visitExtensionTypeDeclaration(ExtensionTypeDeclaration node) {
                                     ^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/source_visitor.dart:2629:43: Error: 'RepresentationConstructorName' isn't a type.
  void visitRepresentationConstructorName(RepresentationConstructorName node) {
                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/source_visitor.dart:2635:39: Error: 'RepresentationDeclaration' isn't a type.
  void visitRepresentationDeclaration(RepresentationDeclaration node) {
                                      ^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/ast_node_visitor.dart:623:39: Error: Type 'ExtensionTypeDeclaration' not found.
  Piece visitExtensionTypeDeclaration(ExtensionTypeDeclaration node) {
                                      ^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/ast_node_visitor.dart:1543:44: Error: Type 'RepresentationConstructorName' not found.
  Piece visitRepresentationConstructorName(RepresentationConstructorName node) {
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/ast_node_visitor.dart:1551:40: Error: Type 'RepresentationDeclaration' not found.
  Piece visitRepresentationDeclaration(RepresentationDeclaration node) {
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/ast_node_visitor.dart:623:39: Error: 'ExtensionTypeDeclaration' isn't a type.
  Piece visitExtensionTypeDeclaration(ExtensionTypeDeclaration node) {
                                      ^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/ast_node_visitor.dart:629:49: Warning: The null-check pattern will have no effect because the matched type isn't nullable.
Try replacing the null-check pattern with its nested pattern.
          if (node.constKeyword case var keyword?) keyword
                                                ^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/ast_node_visitor.dart:1543:44: Error: 'RepresentationConstructorName' isn't a type.
  Piece visitRepresentationConstructorName(RepresentationConstructorName node) {
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/ast_node_visitor.dart:1551:40: Error: 'RepresentationDeclaration' isn't a type.
  Piece visitRepresentationDeclaration(RepresentationDeclaration node) {
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/piece_factory.dart:892:7: Error: Type 'RepresentationDeclaration' not found.
      RepresentationDeclaration? representation,
      ^^^^^^^^^^^^^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/piece_factory.dart:386:46: Error: Non-nullable variable 'forPartsPiece' must be assigned before it can be used.
    var forPiece = ForPiece(forKeywordPiece, forPartsPiece, bodyPiece,
                                             ^^^^^^^^^^^^^
../../../../.pub-cache/hosted/pub.dev/dart_style-2.3.6/lib/src/front_end/piece_factory.dart:892:7: Error: 'RepresentationDeclaration' isn't a type.
      RepresentationDeclaration? representation,
      ^^^^^^^^^^^^^^^^^^^^^^^^^

Solution

I solved this problem already. In case you're having the same issue, you just have to invoke the following commands.

flutter pub run build_runner clean

then rerun the

flutter pub run build_runner build --delete-conflicting-outputs

It solve my problem.