PrivateCoreLib issue with unity engine

Hello there.I’m trying to use Aspose3D Library with Unity Engine.everything looks fine on editor and android version.but our target platform is IOS.i tried to build ios version of project but i got error.it’s related
system.private.corelib.
this is the error:
ArgumentException: The Assembly System.Private.CoreLib is referenced by Aspose.3D (‘Assets/Plugins/Aspose.3D.dll’). But the dll is not allowed to be included or could not be found.

we want to buy license but we need to be sure about working on ios.any help?
Thank You.

@Mr.Hope

We need to investigate this issue and support of the iOS in the API. Therefore, an investigation task as THREEDJAVA-228 has been logged in our issue tracking system. We will further look into its details and keep you posted with the status of its correction. Please be patient and spare us some time.

We are sorry for the inconvenience.