MpxjUtilities don't exist in namespace net.sf.mpxj (modern IKVM)

[jmrezendetn]

I'm trying using the method "MPXJ assemblies (modern IKVM)", like above:

<ItemGroup>
  <PackageReference Include="IKVM.Maven.Sdk" Version="1.6.9" />
</ItemGroup>

<ItemGroup>
  <MavenReference Include="net.sf.mpxj:mpxj" Version="12.8.1" />
</ItemGroup>

but when I created the ReadTaskFields I received the error that MpxjUtilities don't exist in the namespace net.sf.mpxj

What I need to do to fix this problem?