add missing invite filters for config

api/plugins/config/invites.php

@@ -3,5 +3,8 @@ return array(
 	'INVITES-enabled' => false,
 	'INVITES-type-include' => 'plex',
 	'INVITES-plexLibraries' => '',
-	'INVITES-EmbyTemplate' => ''
+	'INVITES-EmbyTemplate' => '',
+	'INVITES-plex-tv-labels' => '',
+	'INVITES-plex-music-labels' => '',
+	'INVITES-plex-movies-labels' => ''
 );