Update index.js

index.js

@@ -23,7 +23,7 @@ app.post("/api/chat", async (req, res) => {
     "node-llama-cpp"
   );
 
-  const reqData = await req.json()
+  const reqData = await req.body;
   const Question = reqData.userInput;
 
   const model = new LlamaModel({