Great idea, does not work with WordPress 6. There are multiple errors and odd behaviors.

Thanks for your development!

On the Admin Page (admin.php?page=fui) I got an Critical Error

Hello!

I am testing your plugin on my local site.

After clicking the scan button, a minute or so later the page simply refreshes with no further information.
Sometimes it shows “Incomplete crawl: Please try again”

Checking the error log I see this:
PHP Notice: register_rest_route was called incorrectly. The REST API route definition for find-unused-images/v1/(?P<num>\d+) is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5768`

I’m on WordPress 5.9
The plugin is currently non-functioning ??

Thanks for your help!