From 8f90bd154b3405138f18b9f63d7f053c2db9f05b Mon Sep 17 00:00:00 2001
From: Jon Ziebell <ziebelje@gmail.com>
Date: Fri, 30 Sep 2022 12:30:49 -0400
Subject: [PATCH] Fixed minor sync issue when merging thermostats

---
 api/runtime.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/api/runtime.php b/api/runtime.php
index 570e33d..e29c014 100644
--- a/api/runtime.php
+++ b/api/runtime.php
@@ -77,7 +77,10 @@ class runtime extends cora\api {
             strtotime($thermostat['sync_begin']) <= strtotime('-1 year')
           ) ||
           // For when merging thermostats and sync_begin is less than first_connected
-          strtotime($thermostat['sync_begin']) <= strtotime($thermostat['first_connected'])
+          (
+            $thermostat['sync_begin'] !== null &&
+            strtotime($thermostat['sync_begin']) <= strtotime($thermostat['first_connected'])
+          )
         ) {
           $this->sync_forwards($thermostat_id);