Invalid argument 'position' when running 'vscode.executeReferenceProvider'

[aknoss]

Hi. I installed the extension and started the server. When I try any command on the MCP Debug Panel on any file, I get this error

{
  "content": [
    {
      "type": "text",
      "text": "Error: Invalid argument 'position' when running 'vscode.executeReferenceProvider', received: undefined "
    }
  ],
  "isError": true
}