Currently, when accessing a non-existent control panel URL (e.g., /controlpanel/does-not-exist), the Controlpanel component returns an empty <div /> if the panel is not found. This provides no visual feedback to the user about the error.

Problem

• Users who type an incorrect URL or try to access a removed panel receive no indication that the panel does not exist.
• This can be confusing, as the screen remains blank with no error message.

Proposal

Change the component to explicitly render the NotFound screen (<NotFound />) when the panel is not found, instead of returning an empty <div />.

Benefits:

• Provides clear feedback to the user when a panel does not exist.
• Improves the user experience and usability of the system.