Hi,

It seems like you're encountering an error after making changes to the employee menu and adding some views, particularly when trying to access the Studio functionality within the employee menu. Here's a step-by-step approach to troubleshoot and resolve this issue:

1. Clear Browser Cache: Sometimes, errors can persist due to cached data in your browser. Try clearing your browser cache and cookies, then reload the page to see if the error persists.
2. Restart Odoo Server: Restart the Odoo server to ensure that any changes made are properly reflected and to clear any potential server-side issues that may be causing the error.
3. Check Server Logs: Review the Odoo server logs to identify the specific error message and traceback associated with the issue. This can provide valuable insights into what might be causing the problem.
4. Review Recent Changes: Since the error occurred after making changes to the employee menu and adding views, carefully review the changes you made. Check for any syntax errors, missing dependencies, or incorrect configurations that might be causing the problem.
5. Check XML Views: If you added or modified XML views, ensure that they are correctly defined and do not contain any errors. Pay close attention to the view definitions, including field names, model references, and inheritance structures.
6. Remove Recent Changes: If the error persists even after removing the changes you made from the User Interface > Views, consider reverting any other recent changes that might be related to the issue. This could include modifications to Python code, XML files, or database records.
7. Test Studio Functionality: Try accessing the Studio functionality from other menus or modules to see if the error is specific to the employee menu or if it affects other areas of the application as well. This can help narrow down the scope of the problem.

Hope it helps