ERROR #5002: Cache error: <NAMESPACE>

Hi I am trying to run a debugger in VS Code.  I have the settings.json file and the launch.json file.  I am trying to debug code using the attach to a process method, however when I run the debugger I get the following error. 

Launch.json code 

{

    // Use IntelliSense to learn about possible attributes.

    // Hover to view descriptions of existing attributes.

    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387

    "version": "0.2.0",

    "configurations": [  

        {

            "type": "objectscript",

            "request": "attach",

            "name": "MergeIsForTTNumber",

            "processId": "$(command:PickProcess)"           

        }

    ]

}

Can anyone help?