fix endpoint

src/app/api/chat/route.js

@@ -1,19 +1,24 @@
 import { HuggingFaceInference } from "@langchain/community/llms/hf";
 
-export async function POST(req, res) {
+export async function POST(req) {
   try {
-    const { query } = req.body;
+    const body = await req.json();
+    const { query } = body;
 
     const model = new HuggingFaceInference({
-      model: 'm42-health/Llama3-Med42-8B',
+      model: "m42-health/Llama3-Med42-8B",
       apiKey: process.env.HUGGING_FACE_API_KEY,
     });
 
     const response = await model.invoke(query);
 
-    res.status(200).json({ answer: response });
+    return new Response(JSON.stringify({ answer: response }), {
+      status: 200,
+    });
   } catch (error) {
-    console.error(error);
-    res.status(500).json({ error: 'Error generating response' });
+    console.error("Backend error:", error);
+    return new Response(JSON.stringify({ error: "Error generating response" }), {
+      status: 500,
+    });
   }
 }