fix(monitor): safely get status of previous beat if first beat

3 years ago · 1d63dd9ddd
parent 176fa6b60d
commit 1d63dd9ddd
1 changed files with 1 additions and 1 deletions
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@ -304,7 +304,7 @@ class Monitor extends BeanModel {

            let beatInterval = this.interval;

-            let isImportant = Monitor.isImportantBeat(isFirstBeat, previousBeat.status, bean.status);
+            let isImportant = Monitor.isImportantBeat(isFirstBeat, previousBeat?.status, bean.status);

            // Mark as important if status changed, ignore pending pings,
            // Don't notify if disrupted changes to up