We have renamed our sever and was trying to implement logshipping

Error: Could not retrieve backup settings for primary ID 'abfb9a42-207e-451b-968c-3ac29edc16f9'.(Microsoft.SqlServer.Management.LogShipping) ***
*** Error: Failed to connect to server SQLSERVER2001.(Microsoft.SqlServer.ConnectionInfo) ***
*** Error: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)(.Net SqlClient Data Provider) ***
Cannot create backup job after implementing logshipping.