Update app.py

app.py

@@ -53,11 +53,20 @@ class ChatRequest(BaseModel):
 
 @app.post("/chat")
 async def chat(request: ChatRequest):
-    if request.user_id not in chatbots:
-        chatbots[request.user_id] = UofTearsBot(llm)
-    current_bot = chatbots[request.user_id]
-    response = current_bot.converse(request.user_text)
-    return JSONResponse(content={"response": response, "history": current_bot.history})
+    try:
+        if request.user_id not in chatbots:
+            chatbots[request.user_id] = UofTearsBot(llm)
+        current_bot = chatbots[request.user_id]
+        response = current_bot.converse(request.user_text)
+        return JSONResponse(content={"response": response, "history": current_bot.history})
+    except Exception as e:
+        import traceback
+        traceback.print_exc()  # logs full stack trace to HF Logs
+        return JSONResponse(
+            status_code=500,
+            content={"error": str(e)}
+        )
+
 
 @app.get("/", response_class=HTMLResponse)
 async def home():