Hi,

It seems like there might be an issue with your Odoo instance, particularly related to exporting while in Studio mode. Here are some steps you can take to troubleshoot and potentially resolve the problem:

1. Check for Module Dependencies: If your coworker created a custom module with Studio and then deleted it, there might be residual dependencies or references causing conflicts. Verify that all references to the deleted module are removed from your database.
2. Restart Odoo Server: Even if you didn't configure the server yourself, you might still have the ability to restart it. If you have access to the server where Odoo is running, try restarting the Odoo server to see if it resolves the issue.
3. Review Studio Changes: If possible, review the changes made by your coworker in Studio before deleting the custom module. Look for any configurations or modifications that might be causing the export error.
4. Clear Browser Cache: Clear your browser cache and cookies, then try exporting again. Sometimes, cached data can cause unexpected errors in web applications like Odoo.
5. Check Server Logs: If you have access to the server where Odoo is hosted, look for server logs to see if there are any error messages or stack traces related to the export operation. Server logs can provide valuable insights into what might be causing the issue.
6. Database Integrity Check: Perform a database integrity check to ensure that there are no inconsistencies or corruption in the database schema. This can be done using Odoo's built-in database management tools or through third-party database management software.

Hope it helps