OPCUA Server Address space Load error|OPC UA Standard|Forum|OPC Foundation

Hi,

I have developed OPC UA SERVER application using CSharp(C#) language.

I am using NodeSet2 XML file to create address space in OPC UA server.

We are running on OPC UA Server using OPCUA SDK. We are loading nodeset2 xml file
When connecting to the OPC UA Server with UaExpert 1.6.3, we now get the following errors in the log: Please help me to resolve the issue

13:51:03.677 | General | | Reading DataTypeDescriptions failed.
13:51:03.677 | General | | Getting structure DataType nodes failed.