Update app.py

app.py

@@ -215,7 +215,7 @@ async def chat(
     """Perform a text search."""
     try:
         with WEBS(proxy=proxy) as webs:
-            results = webs.chat(keywords=q, model=model)
+            results = webs.chat(chat_messages=[{"role": "user", "content": q}], model=model)
             return JSONResponse(content=jsonable_encoder(results))
     except Exception as e:
         raise HTTPException(status_code=500, detail=f"Error getting chat results: {e}")