Getting E_NOTICE on develop branch

I'm getting this error message when I click on the lock icon:

Notice: Undefined index: contact-id in /var/www/../addon/remote_permissions/remote_permissions.php on line 77
bug (x) friendica (x) php (x)
Michael Vogel Friendica (AP)
This addon is unsupported and is about to be removed in future versions of Friendica.
Okay, thank you. :-) But is there any (mostly "protocol-technical") reason?
Michael Vogel Friendica (AP)
It cannot work that way.