Workaround for 500 error problems when creating user roles

Odoo

Xmlhttprequesterror INTERNAL SERVER ERROR

When I add a user role, the following error occurs
<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 3.2 final//en" ><title>500 Internal Server error</title>
My workaround, restart the service program. Use English characters to add a user, add a success, and then edit the changes.

Workaround for 500 error problems when creating user roles