From 965ffc2084c003746521e39f15320175bd6f024b Mon Sep 17 00:00:00 2001
From: Vadym Samoilenko <vadymsamoilenko@oliver.agency>
Date: Fri, 15 May 2026 18:46:55 +0100
Subject: [PATCH] fix(live-preview): fallback serverURL to localhost instead of
 empty string
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postMessage with empty string origin throws "Invalid target origin ''"
Use same fallback as payload.config.ts — http://localhost:3000.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/components/cms/RefreshRouteOnSave.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/cms/RefreshRouteOnSave.tsx b/src/components/cms/RefreshRouteOnSave.tsx
index b918e21..9ec57c7 100644
--- a/src/components/cms/RefreshRouteOnSave.tsx
+++ b/src/components/cms/RefreshRouteOnSave.tsx
@@ -8,7 +8,7 @@ export function RefreshRouteOnSave() {
   return (
     <PayloadLivePreview
       refresh={() => router.refresh()}
-      serverURL={process.env.NEXT_PUBLIC_SITE_URL ?? ''}
+      serverURL={process.env.NEXT_PUBLIC_SITE_URL ?? 'http://localhost:3000'}
     />
   )
 }