From 94212d2f3da64232b3320c38a2d4db1da01e63b7 Mon Sep 17 00:00:00 2001
From: Alexander Meindl <alex@alphanodes.com>
Date: Sun, 9 Sep 2018 15:30:50 +0200
Subject: [PATCH] try to deal with inconsistent data, as in
 https://github.com/mikitex70/redmine_drawio/issues/59

---
 lib/redmine_messenger/patches/wiki_page_patch.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/redmine_messenger/patches/wiki_page_patch.rb b/lib/redmine_messenger/patches/wiki_page_patch.rb
index d56413d..05720b7 100644
--- a/lib/redmine_messenger/patches/wiki_page_patch.rb
+++ b/lib/redmine_messenger/patches/wiki_page_patch.rb
@@ -35,7 +35,7 @@ module RedmineMessenger
           return unless channels.present? && url
 
           attachment = nil
-          unless content.comments.empty?
+          if !content.nil? && content.comments.present?
             attachment = {}
             attachment[:text] = Messenger.markup_format(content.comments.to_s)
           end