PowerBuilder 2017 and later have removed the EAServer-related projects, targets, objects, drivers (SYJ Sybase ASE for EAServer) etc., because the EAServer application server is an obsolete product. Use the migration assistant to detect and remove the deprecated features, components, etc. You can consider to convert server-side NVOs to client-side NVOs and/or deploy server-side NVOs as .NET Web service to Microsoft IIS.