diff --git a/composer.json b/composer.json
index 6fc9b92..ba76d5f 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "mageplaza/module-core": "^1.5.5"
   },
   "type": "magento2-module",
-  "version": "4.7.9",
+  "version": "4.7.10",
   "license": "proprietary",
   "authors": [
     {
diff --git a/view/adminhtml/web/js/grid/columns/actions.js b/view/adminhtml/web/js/grid/columns/actions.js
index 730dbe1..7a96403 100644
--- a/view/adminhtml/web/js/grid/columns/actions.js
+++ b/view/adminhtml/web/js/grid/columns/actions.js
@@ -42,7 +42,7 @@ define([
                 return this._super();
             }
 
-            if (typeof this.modal[action.rowIndex] === 'undefined') {
+            if (typeof this.modal[action.rowIndex] === 'undefined' || typeof this.modal[action.rowIndex] === 'object') {
                 var row = this.rows[action.rowIndex],
                     modalHtml = '<iframe srcdoc="' + row['email_content'] + '" style="width: 100%; height: 100%"></iframe>';