Почему не выполняется функция в плагине vs code?

Question

[Maksym Hapachylo]

Решил написать свой плагин в vs code. Написал простой код, что записывает текст в буфер обмену, но плагин не работает , подскажите, что надо сделать? или дописать еще надо что то? перед запуском плагина такая ошибка вылазит: Activating extension 'kisstkondoros.vscode-gutter-preview' failed: Cannot read property 'fsPath' of undefined. а когда вызиваю плагин то такая : Command 'Hello World' resulted in an error (Running the contributed command: 'css-generate.helloWorld' failed.)

// The module 'vscode' contains the VS Code extensibility API
// Import the module and reference it with the alias vscode in your code below
const vscode = require('vscode');

// this method is called when your extension is activated
// your extension is activated the very first time the command is executed

/**
 * @param {vscode.ExtensionContext} context
 */
function activate(context) {
   // Use the console to output diagnostic information (console.log) and errors (console.error)
   // This line of code will only be executed once when your extension is activated
   console.log('Congratulations, your extension "css-generate" is now active!');

   // The command has been defined in the package.json file
   // Now provide the implementation of the command with  registerCommand
   // The commandId parameter must match the command field in package.json
   let disposable = vscode.commands.registerCommand('css-generate.helloWorld', function () {
      navigator.clipboard.writeText('Hello Alligator!');
      // The code you place here will be executed every time your command is executed

      // Display a message box to the user
      vscode.window.showInformationMessage('Hello World from css generate!');

   });

   context.subscriptions.push(disposable);
}

// this method is called when your extension is deactivated
function deactivate() { }

module.exports = {
   activate,
   deactivate
}