diff --git a/packages/server/next/app/env.ts b/packages/server/next/app/env.ts
index d097278f370d8b3632ffa337bea5148b230e4f9a..c68769b191b203ed40254314d2e54c9a5d0bba7c 100644
--- a/packages/server/next/app/env.ts
+++ b/packages/server/next/app/env.ts
@@ -8,5 +8,5 @@
  */
 export const getEnv = (name: string) => {
   if (typeof window === "undefined") return undefined;
-  return (window as any).LLAMAINDEX[name];
+  return (window as any).LLAMAINDEX?.[name];
 };
diff --git a/packages/server/next/public/config.js b/packages/server/next/public/config.js
index 5ca494cc4c35af4fe4c556917d0e333195023d93..eeb0f9b028c2655453ebd16eb9dea125f09e359c 100644
--- a/packages/server/next/public/config.js
+++ b/packages/server/next/public/config.js
@@ -1,5 +1,5 @@
 // Override the window.LLAMAINDEX object to customize frontend
 
 window.LLAMAINDEX = {
-  CHAT_API: "http://localhost:3000/api/chat",
+  CHAT_API: "/api/chat",
 };