From 170ac4d6e2e08028cebd9404e23c893f8e28cc01 Mon Sep 17 00:00:00 2001
From: Hadi Nategh <hnategh@gmail.com>
Date: Thu, 16 Dec 2021 11:39:43 +0100
Subject: [PATCH] Fix error Cannot read properties of null (reading 'split')

---
 api/js/etemplate/etemplate2.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/js/etemplate/etemplate2.ts b/api/js/etemplate/etemplate2.ts
index e6353f3abb..b2224a20f9 100644
--- a/api/js/etemplate/etemplate2.ts
+++ b/api/js/etemplate/etemplate2.ts
@@ -1073,8 +1073,8 @@ export class etemplate2
 
 			// check if id contains a hierachical name, eg. "button[save]"
 			let id = _widget.id;
-			let indexes = id.split('[');
-			if(indexes.length > 1)
+			let indexes = id?.split('[');
+			if(indexes?.length > 1)
 			{
 				indexes = [indexes.shift(), indexes.join('[')];
 				indexes[1] = indexes[1].substring(0, indexes[1].length - 1);