ngdart on web/main.dart: Null check operator used on a null value

[Myhed]

Hey,

I am running dart v2.17.0 i am getting stuck cause an error occured during the serve with webdev

i use dsm for version manager dart ran on windows 11 system

i tried multiple version of dart like

• v 2.12.0
• v 2.19.0
• v 2.19.6

[INFO] Building new asset graph completed, took 1.6s
[INFO] Checking for unexpected pre-existing outputs. completed, took 0ms
[INFO] Serving `web` on http://127.0.0.1:8080
[INFO] Generating SDK summary completed, took 5.1s
[SEVERE] ngdart on web/main.dart: Null check operator used on a null value
#0      ElementAnnotationExtensions.targetKinds (package:analyzer/src/dart/element/extensions.dart:42:51)
#1      BestPracticesVerifier.visitAnnotation (package:analyzer/src/error/best_practices_verifier.dart:323:25)
#2      AnnotationImpl.accept (package:analyzer/src/dart/ast/ast.dart:318:50)
#3      NodeListImpl.accept (package:analyzer/src/dart/ast/ast.dart:8777:20)
#4      AnnotatedNodeImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:154:17)
#5      UriBasedDirectiveImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:12094:11)
#6      ImportDirectiveImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:6787:11)
#7      RecursiveAstVisitor.visitImportDirective (package:analyzer/dart/ast/visitor.dart:1111:10)
#8      BestPracticesVerifier.visitImportDirective (package:analyzer/src/error/best_practices_verifier.dart:627:11)
#9      ImportDirectiveImpl.accept (package:analyzer/src/dart/ast/ast.dart:6783:50)
#10     NodeListImpl.accept (package:analyzer/src/dart/ast/ast.dart:8777:20)
#11     CompilationUnitImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:2454:19)
#12     RecursiveAstVisitor.visitCompilationUnit (package:analyzer/dart/ast/visitor.dart:817:10)
#13     CompilationUnitImpl.accept (package:analyzer/src/dart/ast/ast.dart:2448:50)
#14     LibraryAnalyzer._computeHints (package:analyzer/src/dart/analysis/library_analyzer.dart:344:10)
#15     LibraryAnalyzer._computeDiagnostics.<anonymous closure> (package:analyzer/src/dart/analysis/library_analyzer.dart:274:9)
#16     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:614:13)
#17     LibraryAnalyzer._computeDiagnostics (package:analyzer/src/dart/analysis/library_analyzer.dart:273:13)
#18     LibraryAnalyzer.analyze (package:analyzer/src/dart/analysis/library_analyzer.dart:92:5)
#19     AnalysisDriver._computeAnalysisResult.<anonymous closure> (package:analyzer/src/dart/analysis/driver.dart:1373:11)
<asynchronous suspension>
#20     PerformanceLog.runAsync (package:analyzer/src/dart/analysis/performance_logger.dart:50:14)
<asynchronous suspension>
#21     AnalysisDriver._computeErrors (package:analyzer/src/dart/analysis/driver.dart:1410:26)
<asynchronous suspension>
#22     AnalysisDriver.performWork (package:analyzer/src/dart/analysis/driver.dart:1118:20)
<asynchronous suspension>
#23     AnalysisDriverScheduler._run (package:analyzer/src/dart/analysis/driver.dart:2171:7)
<asynchronous suspension>


[WARNING] No actions completed for 15.1s, waiting on:
  - ngdart on lib/app_component.dart
  - ngdart on test/app_test.dart
  - ngdart on test/app_test.dart.browser_test.dart
  - build_web_compilers:ddc_modules on lib/$lib$
  - build_web_compilers:ddc_modules on web/main.dart
  .. and 1 more

[WARNING] No actions completed for 15.1s, waiting on:
  - ngdart on lib/app_component.dart
  - ngdart on test/app_test.dart
  - ngdart on test/app_test.dart.browser_test.dart
  - build_web_compilers:ddc_modules on lib/$lib$
  - build_web_compilers:ddc_modules on web/main.dart
  .. and 1 more

anyone can help me to run AngularDart server please