server.ts

@@ -529,8 +529,14 @@ async function initializeServer() {
       // Fallback to TanStack Start handler for all other routes
       '/*': async (req: Request) => {
         try {
-          const response = await handler.fetch(req)
-          return response as Response
+          const h3Response = await handler.fetch(req)
+            
+          const body = await h3Response.arrayBuffer()
+          return new Response(body, {
+            status: h3Response.status,
+            statusText: h3Response.statusText,
+            headers: h3Response.headers,
+          })
         } catch (error) {
           log.error(`Server handler error: ${String(error)}`)
           return new Response('Internal Server Error', { status: 500 })