1 files changed, 6 insertions, 3 deletions
diff --git a/ext/js/templates/sandbox/template-renderer-frame-api.js b/ext/js/templates/sandbox/template-renderer-frame-api.js
index f234c8e0..af83425b 100644
--- a/ext/js/templates/sandbox/template-renderer-frame-api.js
+++ b/ext/js/templates/sandbox/template-renderer-frame-api.js
@@ -72,12 +72,15 @@ class TemplateRendererFrameApi {
     _serializeError(error) {
         try {
             if (typeof error === 'object' && error !== null) {
-                return {
+                const result = {
                     name: error.name,
                     message: error.message,
-                    stack: error.stack,
-                    data: error.data
+                    stack: error.stack
                 };
+                if (Object.prototype.hasOwnProperty.call(error, 'data')) {
+                    result.data = error.data;
+                }
+                return result;
             }
         } catch (e) {
             // NOP