From 7b67723da9a3a6c40b97b98dd7231090e3ff740b Mon Sep 17 00:00:00 2001
From: Sage Abdullah <sage.abdullah@torchbox.com>
Date: Tue, 23 Jul 2024 16:14:31 +0100
Subject: [PATCH] Fix error if the preview iframe does not have the userbar
 loaded

---
 client/src/includes/previewPlugin.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/client/src/includes/previewPlugin.ts b/client/src/includes/previewPlugin.ts
index d708e363c2..6258cff4a3 100644
--- a/client/src/includes/previewPlugin.ts
+++ b/client/src/includes/previewPlugin.ts
@@ -34,7 +34,7 @@ export const wagtailPreviewPlugin: AxePlugin = {
       // Inside the preview frame, only call the expected plugin instance method.
       // eslint-disable-next-line no-underscore-dangle
       const pluginInstance = this._registry[id];
-      pluginInstance[action].call(pluginInstance, options, callback);
+      pluginInstance?.[action].call(pluginInstance, options, callback);
     }
   },
   commands: [