System.ArgumentNullException:

[AalundO]

Hi,
Microsoft (R) AL Compiler version 0.12.28462
I get this error when I try to start debuggeing (get the same if I try with out debugging):

[Error - 1:19:26 PM] Please report this issue to https://github.com/microsoft/al/issues including information on how to reproduce it, if possible.Details:
System.ArgumentNullException: En værdi må ikke være null.
Parameternavn: key
ved System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
ved System.Collections.Generic.Dictionary2.FindEntry(TKey key) ved System.Collections.Generic.Dictionary2.TryGetValue(TKey key, TValue& value)
ved Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.ArrayBuilder1.ToDictionary[K](Func2 keySelector, IEqualityComparer1 comparer) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\ArrayBuilder.cs:linje 345 ved Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.EnumerableExtensions.ToDictionaryOfArrays[TValue,TKey](IEnumerable1 source, Func2 keySelector, IEqualityComparer1 keyComparer) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\EnumerableExtensions.cs:linje 483
ved Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectTypeSymbol.GetCodeMembers(String name) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\ObjectTypeSymbol.cs:linje 129
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupMembersInClass(LookupResult result, TypeSymbol type, String name, BoundExpression receiver, LookupOptions options, Binder originalBinder, Boolean diagnose, HashSet1& useSiteDiagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Lookup.cs:linje 221 ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupMembersInType(LookupResult result, TypeSymbol type, String name, BoundExpression receiver, LookupOptions options, Binder originalBinder, Boolean diagnose, HashSet1& useSiteDiagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Lookup.cs:linje 143
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupMembersInternal(LookupResult result, ContainerSymbol container, String name, LookupOptions options, Binder originalBinder, Boolean diagnose, HashSet1& useSiteDiagnostics, BoundExpression receiver) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Lookup.cs:linje 97 ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupMembersWithFallback(LookupResult result, ContainerSymbol namespaceOrType, String name, HashSet1& useSiteDiagnostics, LookupOptions options) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder.cs:linje 510
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindInstanceMemberAccess(SyntaxNode node, SyntaxNode right, BoundExpression boundLeft, String rightName, Boolean invoked, Boolean isStatement, DiagnosticBag diagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Expressions.cs:linje 1471
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindMemberAccessWithBoundLeft(ExpressionSyntax node, BoundExpression boundLeft, NameSyntax right, Boolean invoked, Boolean isStatement, DiagnosticBag diagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Expressions.cs:linje 1423
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindMethodGroup(ExpressionSyntax node, Boolean invoked, DiagnosticBag diagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Invocation.cs:linje 329
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindInvocationExpression(InvocationExpressionSyntax node, DiagnosticBag diagnostics, Boolean isStatement) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Invocation.cs:linje 31
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindBooleanExpression(ExpressionSyntax node, DiagnosticBag diagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Statements.cs:linje 560
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindIfStatement(IfStatementSyntax node, DiagnosticBag diagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Statements.cs:linje 542
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindStatement(StatementSyntax node, DiagnosticBag diagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Statements.cs:linje 92
ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindStatements(SyntaxList1 syntaxStatements, DiagnosticBag diagnostics, Binder binder) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Statements.cs:linje 53 ved Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindBlock(BlockSyntax node, DiagnosticBag diagnostics, Binder blockBinder) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Statements.cs:linje 33 ved Microsoft.Dynamics.Nav.CodeAnalysis.MethodCompiler.BindMethodBody(MethodSymbol method, DiagnosticBag diagnostics) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compiler\MethodCompiler.cs:linje 463 ved Microsoft.Dynamics.Nav.CodeAnalysis.MethodCompiler.CompileMethod(MethodSymbol methodSymbol) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compiler\MethodCompiler.cs:linje 385 ved Microsoft.Dynamics.Nav.CodeAnalysis.MethodCompiler.CompileMembers(ContainerSymbol containingType) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compiler\MethodCompiler.cs:linje 309 ved Microsoft.Dynamics.Nav.CodeAnalysis.MethodCompiler.CompileObject(ObjectTypeSymbol containingType) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compiler\MethodCompiler.cs:linje 235 ved Microsoft.Dynamics.Nav.CodeAnalysis.MethodCompiler.<>c__DisplayClass17_0.<CompileObjectAsTask>b__0() i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compiler\MethodCompiler.cs:linje 216 ved Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass5_0.<WithCurrentUICulture>b__0() i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:linje 152 ved System.Threading.Tasks.Task.Execute() --- Afslutningen på staksporingen fra den tidligere placering, hvor undtagelsen blev udløst --- ved System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() ved System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) ved Microsoft.Dynamics.Nav.CodeAnalysis.MethodCompiler.WaitForWorkers() i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compiler\MethodCompiler.cs:linje 161 ved Microsoft.Dynamics.Nav.CodeAnalysis.MethodCompiler.CompileMethodBodies(Compilation compilation, ModuleBuilder moduleBeingBuiltOpt, Boolean hasDeclarationErrors, DiagnosticBag diagnostics, Predicate1 filterOpt, CancellationToken cancellationToken) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compiler\MethodCompiler.cs:linje 145
ved Microsoft.Dynamics.Nav.CodeAnalysis.Compilation.CompileImpl(ModuleBuilder moduleBuilder, Boolean emittingPdb, DiagnosticBag diagnostics, Predicate1 filterOpt, CancellationToken cancellationToken) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compilation\Compilation.cs:linje 806 ved Microsoft.Dynamics.Nav.CodeAnalysis.Compilation.Compile(ModuleBuilder moduleBuilder, Boolean emittingPdb, DiagnosticBag diagnostics, Predicate1 filterOpt, CancellationToken cancellationToken) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compilation\Compilation.cs:linje 783
ved Microsoft.Dynamics.Nav.CodeAnalysis.CommandLine.CommonCompiler.PackageTheModule(Compilation compilation, CompilerTextWriter consoleOutput, CancellationToken cancellationToken, ErrorLogger errorLogger, AnalyzerDriver analyzerDriver) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\CommandLine\CommonCompiler.cs:linje 531
ved Microsoft.Dynamics.Nav.CodeAnalysis.CommandLine.CommonCompiler.RunCore(CompilerTextWriter consoleOutput, ErrorLogger errorLogger, CancellationToken cancellationToken) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\CommandLine\CommonCompiler.cs:linje 413
ved Microsoft.Dynamics.Nav.CodeAnalysis.CommandLine.CommonCompiler.Run(CompilerTextWriter consoleOutput, CancellationToken cancellationToken) i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\CommandLine\CommonCompiler.cs:linje 312
ved Microsoft.Dynamics.Nav.EditorServices.Protocol.LanguageServer.Extensions.CreatePackageRequestHandler.d__3.MoveNext() i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.EditorServices.Protocol\LanguageServer\Extensions\CreatePackageRequestHandler.cs:linje 32
--- Afslutningen på staksporingen fra den tidligere placering, hvor undtagelsen blev udløst ---
ved System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
ved System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
ved Microsoft.Dynamics.Nav.EditorServices.Protocol.RequestRegistry.d__6.MoveNext() i C:\a\316\s\source\Prod\Microsoft.Dynamics.Nav.EditorServices.Protocol\Endpoints\RequestRegistry.cs:linje 59

[StanislawStempin]

I'm sorry about the fact that the error message still asks you to go to this forum for NAV 2018 issues, it should not. We will fix that message.

This GitHub repository is dedicated to handling issues and feedback only for the latest Developer Preview releases of the AL development tools for Dynamics 365 Business Central.

If you can reproduce the problem on the latest Business Central Developer preview version we will be happy to look further into it. Otherwise please contact the regular support channel.

You can open Support Request to CSS through PartnerSource portal or contact your Service Account Manager (SAM) in the local subsidiary to understand what is included in your contract as of support incident and PAH (Partner Advisory Hours). Your SAM might also step by step direct you how to open a support request or how to get credentials if this is the first time for you / your company.

For more details please read:
https://blogs.msdn.microsoft.com/nav/2018/05/03/al-developer-previews-multiple-releases-and-github/
https://github.com/Microsoft/AL/wiki/Frequently-Asked-Questions#i-found-an-issue-on-nav-2018-what-do-i-do