Empty string cause error in Class Library

[alberk8]

I have a simple class library below. It is a netstardard2.1 class library and when the Name string is "" it would successfully compile with error and cause runtime crash. There is no error when the string is " "

namespace ClassObfucar
{
    public class TestClass
    {
        public string Name { get; set; } = "";
        public int Age { get; set; }
    }
}

Error

1>Unhandled exception. System.ArgumentException: Member 'System.String <PrivateImplementationDetails>{DDFB045B-AD94-4EFE-B744-4B2007B9CBC2}.97C2BFC3-37BC-409C-A48F-DD96FC45C7AC::A()' is declared in another module and needs to be imported
1>   at Mono.Cecil.MetadataBuilder.LookupToken(IMetadataTokenProvider provider)
1>   at Mono.Cecil.Cil.CodeWriter.WriteOperand(Instruction instruction)
1>   at Mono.Cecil.Cil.CodeWriter.WriteInstructions()
1>   at Mono.Cecil.Cil.CodeWriter.WriteResolvedMethodBody(MethodDefinition method)
1>   at Mono.Cecil.Cil.CodeWriter.WriteMethodBody(MethodDefinition method)
1>   at Mono.Cecil.MetadataBuilder.AddMethod(MethodDefinition method)
1>   at Mono.Cecil.MetadataBuilder.AddMethods(TypeDefinition type)
1>   at Mono.Cecil.MetadataBuilder.AddType(TypeDefinition type)
1>   at Mono.Cecil.MetadataBuilder.AddTypes()
1>   at Mono.Cecil.MetadataBuilder.BuildTypes()
1>   at Mono.Cecil.MetadataBuilder.BuildModule()
1>   at Mono.Cecil.MetadataBuilder.BuildMetadata()
1>   at Mono.Cecil.ModuleWriter.<>c.<BuildMetadata>b__2_0(MetadataBuilder builder, MetadataReader _)
1>   at Mono.Cecil.ModuleDefinition.Read[TItem,TRet](TItem item, Func`3 read)
1>   at Mono.Cecil.ModuleWriter.BuildMetadata(ModuleDefinition module, MetadataBuilder metadata)
1>   at Mono.Cecil.ModuleWriter.Write(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters)
1>   at Mono.Cecil.ModuleWriter.WriteModule(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters)
1>   at Mono.Cecil.ModuleDefinition.Write(String fileName, WriterParameters parameters)
1>   at Mono.Cecil.AssemblyDefinition.Write(String fileName, WriterParameters parameters)
1>   at Obfuscar.Obfuscator.SaveAssemblies(Boolean throwException) in C:\Users\lextudio\source\repos\obfuscar\Obfuscar\Obfuscator.cs:line 296
1>   at Obfuscar.Obfuscator.RunRules() in C:\Users\lextudio\source\repos\obfuscar\Obfuscar\Obfuscator.cs:line 137
1>   at Obfuscar.Program.Main(String[] args) in C:\Users\lextudio\source\repos\obfuscar\GlobalTools\Program.cs:line 115
1>Saving assemblies...D:\Staging\ClassObfucar\ClassObfucar\Obfuscator\ClassObfucar.dll

[lextm]

You might upgrade to 2.2.38 release and try again. Mono Cecil is now upgraded, so the issue might be gone.