Prevent update msg when no message exists

discordbot/titanembeds/database/__init__.py

@@ -68,6 +68,7 @@ class DatabaseInterface(object):
                         .filter(Messages.guild_id == message.server.id) \
                         .filter(Messages.channel_id == message.channel.id) \
                         .filter(Messages.message_id == message.id).first()
+                    if msg:
                         msg.content = message.content
                         msg.edited_timestamp = message.edited_timestamp
                         msg.mentions = json.dumps(message.mentions)