From 314dbed1216852fdd9bf7acdeb8d3bb19d2363d6 Mon Sep 17 00:00:00 2001
From: Vladyslav_Prykhodko <vprykhodko@thingsboard.io>
Date: Tue, 17 Aug 2021 10:27:55 +0300
Subject: [PATCH] UI: Added check for DOM element existence before calling draw
 function

---
 ui-ngx/src/app/shared/components/led-light.component.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui-ngx/src/app/shared/components/led-light.component.ts b/ui-ngx/src/app/shared/components/led-light.component.ts
index 35dea1242d..3c1c736659 100644
--- a/ui-ngx/src/app/shared/components/led-light.component.ts
+++ b/ui-ngx/src/app/shared/components/led-light.component.ts
@@ -73,7 +73,7 @@ export class LedLightComponent implements OnInit, AfterViewInit, OnChanges {
     for (const propName of Object.keys(changes)) {
       const change = changes[propName];
       if (!change.firstChange && change.currentValue !== change.previousValue) {
-        if (propName === 'enabled') {
+        if (propName === 'enabled' && this.circleElement) {
           this.draw();
         } else if (propName === 'size') {
           this.update();