Error Code : CS0246 CS0103 CS1503 Issue: Compilation failure during the library compilation process in UiPath Studio. 2025.0.161

Thank you for your reply.
I tried to move the C# project folder outside the main project solution folder. Still I am facing the same issue.
FYI: I am using any codeworkflow.cs file in my project.

Kindly assist me in resolving the issue.