From 2055896922039ae1bc7663ac15582cf82d663c5c Mon Sep 17 00:00:00 2001
From: mohamed yahia <salemmohamed780@gmail.com>
Date: Mon, 28 Oct 2024 09:36:31 +0300
Subject: [PATCH] Throw an error if trying to access a data variable with
 undefined em (#6268)

---
 packages/core/src/data_sources/model/DataVariable.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/core/src/data_sources/model/DataVariable.ts b/packages/core/src/data_sources/model/DataVariable.ts
index a03e1d677..c84ef0b3c 100644
--- a/packages/core/src/data_sources/model/DataVariable.ts
+++ b/packages/core/src/data_sources/model/DataVariable.ts
@@ -37,6 +37,9 @@ export default class DataVariable extends Model {
 
   getDataValue() {
     const { path, defaultValue } = this.attributes;
+    if (!this.em) {
+      throw new Error('EditorModel instance is not provided for a data variable.');
+    }
     const val = this.em?.DataSources.getValue(path, defaultValue);
 
     return val;