I had the plugin activated, but was not particularly using it. I was testing my own plugin to deliberately disallow access and get a page not found error.
The issue is within your routine edac_enqueue_scripts in includes/enqueue_scripts.php
If the global $post is null, then it sets $post_id to null.
Then it calls current_user_can( 'edit_post', $post_id )
When outputting the expected 404 page, I get this debug message:
Notice: Function map_meta_cap was called incorrectly. When checking for the edit_post capability, you must always check it against a specific post. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in /usr/share/wordpress/wp-includes/functions.php on line 5905
Deactivating your plugin made the message disappear.
Hope this is of use,
Neil James