Plugin\Reply\Entity\NoteReply::getReplyToNote lacked a check to make sure the 'reply_to' key existed within the array resulting from the query.
[PLUGIN][Repeat] Deleted unnecessary card note template, info now to appended at the end of note. [PLUGIN][TreeNotes] WIP to accomodate reply plugin changes. [TWIG][Runtime] Removed getAdditionalTemplateVars event.