After updating dart to 2.16.0 stable channel dart doc is throwing error

[MohamedFBoussaid]

running dart doc . is throwing the following errors :

dartdoc 4.1.0 failed: type 'PropertyAccessImpl' is not a subtype of type 'IdentifierImpl' in type cast
#0      CommentReferenceImpl.identifier (package:analyzer/src/dart/ast/ast.dart:1911:48)
dart-lang/sdk#1      new _ModelCommentReferenceImpl (package:dartdoc/src/comment_references/model_comment_reference.dart:101:29)
dart-lang/sdk#2      new ModelCommentReference (package:dartdoc/src/comment_references/model_comment_reference.dart:24:7)
dart-lang/sdk#3      ModelNode._commentRefsFor (package:dartdoc/src/model/model_node.dart:30:11)
dart-lang/sdk#4      new ModelNode (package:dartdoc/src/model/model_node.dart:22:23)
dart-lang/sdk#5      PackageGraph.populateModelNodeFor.<anonymous closure> (package:dartdoc/src/model/package_graph.dart:174:15)
dart-lang/sdk#6      _LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:453:23)
dart-lang/sdk#7      PackageGraph.populateModelNodeFor (package:dartdoc/src/model/package_graph.dart:172:17)
dart-lang/sdk#8      new Library.fromLibraryResult.<anonymous closure> (package:dartdoc/src/model/library.dart:82:26)
dart-lang/sdk#9      _HashableChildLibraryElementVisitor.visitElement (package:dartdoc/src/model/library.dart:34:21)
dart-lang/sdk#10     GeneralizingElementVisitor.visitExecutableElement (package:analyzer/dart/element/visitor.dart:101:59)
dart-lang/sdk#11     GeneralizingElementVisitor.visitMethodElement (package:analyzer/dart/element/visitor.dart:151:7)
dart-lang/sdk#12     MethodElementImpl.accept (package:analyzer/src/dart/element/element.dart:4323:54)
dart-lang/sdk#13     ElementImpl.safelyVisitChildren (package:analyzer/src/dart/element/element.dart:2587:13)
dart-lang/sdk#14     ClassElementImpl.visitChildren (package:analyzer/src/dart/element/element.dart:804:5)
dart-lang/sdk#15     GeneralizingElementVisitor.visitElement (package:analyzer/dart/element/visitor.dart:97:13)
dart-lang/sdk#16     _HashableChildLibraryElementVisitor.visitElement (package:dartdoc/src/model/library.dart:35:11)
dart-lang/sdk#17     GeneralizingElementVisitor.visitClassElement (package:analyzer/dart/element/visitor.dart:86:49)
dart-lang/sdk#18     AbstractClassElementImpl.accept (package:analyzer/src/dart/element/element.dart:126:54)
dart-lang/sdk#19     ElementImpl.safelyVisitChildren (package:analyzer/src/dart/element/element.dart:2587:13)
dart-lang/sdk#20     CompilationUnitElementImpl.visitChildren (package:analyzer/src/dart/element/element.dart:1228:5)
dart-lang/sdk#21     GeneralizingElementVisitor.visitElement (package:analyzer/dart/element/visitor.dart:97:13)
dart-lang/sdk#22     _HashableChildLibraryElementVisitor.visitElement (package:dartdoc/src/model/library.dart:35:11)
dart-lang/sdk#23     GeneralizingElementVisitor.visitCompilationUnitElement (package:analyzer/dart/element/visitor.dart:90:7)
dart-lang/sdk#24     CompilationUnitElementImpl.accept (package:analyzer/src/dart/element/element.dart:1190:15)
dart-lang/sdk#25     ElementImpl.safelyVisitChildren (package:analyzer/src/dart/element/element.dart:2587:13)
dart-lang/sdk#26     LibraryElementImpl.visitChildren (package:analyzer/src/dart/element/element.dart:4169:5)
dart-lang/sdk#27     GeneralizingElementVisitor.visitElement (package:analyzer/dart/element/visitor.dart:97:13)
dart-lang/sdk#28     _HashableChildLibraryElementVisitor.visitElement (package:dartdoc/src/model/library.dart:35:11)
dart-lang/sdk#29     new Library.fromLibraryResult (package:dartdoc/src/model/library.dart:83:10)
dart-lang/sdk#30     PackageGraph.addLibraryToGraph (package:dartdoc/src/model/package_graph.dart:72:23)
dart-lang/sdk#31     PubPackageBuilder._parseLibraries (package:dartdoc/src/model/package_builder.dart:225:23)
<asynchronous suspension>
dart-lang/sdk#32     PubPackageBuilder.getLibraries (package:dartdoc/src/model/package_builder.dart:404:5)
<asynchronous suspension>
dart-lang/sdk#33     PubPackageBuilder.buildPackageGraph (package:dartdoc/src/model/package_builder.dart:75:5)
<asynchronous suspension>
dart-lang/sdk#34     Dartdoc.generateDocsBase (package:dartdoc/dartdoc.dart:185:24)
<asynchronous suspension>
dart-lang/sdk#35     Dartdoc.generateDocs (package:dartdoc/dartdoc.dart:233:24)
<asynchronous suspension>
dart-lang/sdk#36     Dartdoc.executeGuarded.<anonymous closure> (package:dartdoc/dartdoc.dart:493:9)
<asynchronous suspension>

This was working fine with dart 2.15.1

[RicardoRB]

#2934 related

[srawlins]

Thanks for filing this issue. Duplicate of #2934.