From f6ed30fdf9c880d1fa283328328036e22953831c Mon Sep 17 00:00:00 2001
From: hobbyquaker <bastiraff@googlemail.com>
Date: Thu, 5 Dec 2019 17:19:59 +0100
Subject: [PATCH] catch race condition (#72)

---
 nodes/converter.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nodes/converter.js b/nodes/converter.js
index ec33fdf..1d54e68 100644
--- a/nodes/converter.js
+++ b/nodes/converter.js
@@ -96,7 +96,7 @@ module.exports = function (RED) {
                 this.debug('topic=' + msg.topic + ' name=' + name + ' ieeeAddr=' + ieeeAddr + ' attribute=' + attribute + ' payload=' + JSON.stringify(msg.payload));
 
                 if (!device) {
-                    group = this.groups.find(g => g.meta.name === topicAttrs.name);
+                    group = this.groups && this.groups.find(g => g.meta.name === topicAttrs.name);
                     if (group) {
                         isGroup = true;
                     } else {