update the package

[ritunjaykumar]

Hi teams,

Please update the package. I am getting error below error.

D:\startup\app\demo_application
dart run build_runner build
Building package executable... (1.0s)
Built build_runner:build_runner.
[INFO] Generating build script completed, took 277ms
[WARNING] Throwing away cached asset graph because the language version of some package(s) changed. This would most commonly happen when updating dependencies or changing your min sdk constraint.
[INFO] Cleaning up outputs from previous builds. completed, took 28ms
[INFO] Generating build script completed, took 78ms
[WARNING] Invalidated precompiled build script due to missing asset graph.
[INFO] Precompiling build script... completed, took 1.1s
[INFO] Building new asset graph completed, took 1.4s
[INFO] Checking for unexpected pre-existing outputs. completed, took 0ms
[WARNING] retrofit_generator on test/widget_test.dart:
Your current `analyzer` version may not fully support your current SDK version.

Analyzer language version: 3.1.0
SDK language version: 3.4.0

Please update to the latest `analyzer` version (6.7.0) by running
`flutter packages upgrade`.

If you are not getting the latest version by running the above command, you
can try adding a constraint like the following to your pubspec to start
diagnosing why you can't get the latest version:

dev_dependencies:
  analyzer: ^6.7.0

[WARNING] smartstruct_generator:mapper on lib/model/mapper/smart_struct.dart:
Bad state: No element
[WARNING] smartstruct_generator:mapper on lib/model/mapper/smart_struct.dart:
#0      Iterable.first (dart:core/iterable.dart:643:7)
#1      _chooseConstructor (package:smartstruct_generator/code_builders/method_builder.dart:121:71)
#2      _generateBody (package:smartstruct_generator/code_builders/method_builder.dart:62:29)
#3      buildMapperImplementation.<anonymous closure> (package:smartstruct_generator/code_builders/method_builder.dart:26:14)
#4      _$MethodBuilder.update (package:code_builder/src/specs/method.g.dart:323:33)
#5      new _$Method (package:code_builder/src/specs/method.g.dart:38:29)
#6      buildMapperImplementation (package:smartstruct_generator/code_builders/method_builder.dart:22:10)
#7      _generateMapperImplementationClass.<anonymous closure>.<anonymous closure> (package:smartstruct_generator/code_builders/class_builder.dart:83:15)
#8      MappedIterator.moveNext (dart:_internal/iterable.dart:403:20)
#9      List.addAll (dart:core-patch/growable_array.dart:319:13)
#10     ListBuilder.addAll (package:built_collection/src/list/list_builder.dart:98:14)
#11     _generateMapperImplementationClass.<anonymous closure> (package:smartstruct_generator/code_builders/class_builder.dart:80:17)
#12     _$ClassBuilder.update (package:code_builder/src/specs/class.g.dart:345:33)
#13     new _$Class (package:code_builder/src/specs/class.g.dart:40:28)
#14     _generateMapperImplementationClass (package:smartstruct_generator/code_builders/class_builder.dart:73:10)
#15     buildMapperClass.<anonymous closure> (package:smartstruct_generator/code_builders/class_builder.dart:16:11)
#16     _$LibraryBuilder.update (package:code_builder/src/specs/library.g.dart:226:33)
#17     new _$Library (package:code_builder/src/specs/library.g.dart:28:30)
#18     buildMapperClass (package:smartstruct_generator/code_builders/class_builder.dart:14:10)
#19     MapperGenerator.generateForAnnotatedElement (package:smartstruct_generator/generators/mapper_generator.dart:27:26)
#20     GeneratorForAnnotation.generate (package:source_gen/src/generator_for_annotation.dart:61:30)
#21     _generate (package:source_gen/src/builder.dart:342:33)
<asynchronous suspension>
#22     Stream.toList.<anonymous closure> (dart:async/stream.dart:1351:9)
<asynchronous suspension>
#23     _Builder._generateForLibrary (package:source_gen/src/builder.dart:107:9)
<asynchronous suspension>
#24     _Builder.build (package:source_gen/src/builder.dart:99:5)
<asynchronous suspension>
#25     runBuilder.buildForInput (package:build/src/generate/run_builder.dart:83:7)
<asynchronous suspension>
#26     Future.wait.<anonymous closure> (dart:async/future.dart:524:21)
<asynchronous suspension>
#27     scopeLogAsync.<anonymous closure> (package:build/src/builder/logging.dart:32:40)
<asynchronous suspension>

[SEVERE] smartstruct_generator:mapper on lib/model/mapper/smart_struct.dart:

Bad state: No element
dart:core                                                               Iterable.first
package:smartstruct_generator/code_builders/method_builder.dart 121:71  _chooseConstructor
package:smartstruct_generator/code_builders/method_builder.dart 62:29   _generateBody
package:smartstruct_generator/code_builders/method_builder.dart 26:14   buildMapperImplementation.<fn>
package:code_builder/src/specs/method.g.dart 323:33                     _$MethodBuilder.update
package:code_builder/src/specs/method.g.dart 38:29                      new _$Method
package:smartstruct_generator/code_builders/method_builder.dart 22:10   buildMapperImplementation
package:smartstruct_generator/code_builders/class_builder.dart 83:15    _generateMapperImplementationClass.<fn>.<fn>
dart:core                                                               List.addAll
package:built_collection/src/list/list_builder.dart 98:14               ListBuilder.addAll
package:smartstruct_generator/code_builders/class_builder.dart 80:17    _generateMapperImplementationClass.<fn>
package:code_builder/src/specs/class.g.dart 345:33                      _$ClassBuilder.update
package:code_builder/src/specs/class.g.dart 40:28                       new _$Class
package:smartstruct_generator/code_builders/class_builder.dart 73:10    _generateMapperImplementationClass
package:smartstruct_generator/code_builders/class_builder.dart 16:11    buildMapperClass.<fn>
package:code_builder/src/specs/library.g.dart 226:33                    _$LibraryBuilder.update
package:code_builder/src/specs/library.g.dart 28:30                     new _$Library
package:smartstruct_generator/code_builders/class_builder.dart 14:10    buildMapperClass
package:smartstruct_generator/generators/mapper_generator.dart 27:26    MapperGenerator.generateForAnnotatedElement
package:source_gen/src/generator_for_annotation.dart 61:30              GeneratorForAnnotation.generate
package:source_gen/src/builder.dart 342:33                              _generate
dart:async                                                              Stream.toList.<fn>
package:source_gen/src/builder.dart 107:9                               _Builder._generateForLibrary
package:source_gen/src/builder.dart 99:5                                _Builder.build

[INFO] Running build completed, took 14.9s
[INFO] Caching finalized dependency graph completed, took 73ms
[SEVERE] Failed after 15.0s