"Error: Ora-65096: Invalid common user or role name" when trying to access some features and creating TOAD user. (4234420)

When trying to access Trace File Browser, there is a prompt to set up server side objects. One options is to create a public TOAD user and set up the objects there.

When working in a pluggable database connection, trying to do so gives the following:

"Error: Ora-65096: Invalid common user or role name"

The Toad generated scripts seem to be incorrect and cannot apply to the current connection.

This may also occur when accessing other features in Toad that require server side objects and creating new users.