Update backend/app.py

backend/app.py

@@ -24,7 +24,7 @@ import chainlit as cl
 @cl.on_chat_start
 async def on_chat_start():
     lm_config = lm.OpenAIGPTConfig(
-    chat_model=models['phi3'],
+    chat_model=models['ollama/phi3'],
     chat_context_length=4000,  # set this based on model
     max_output_tokens=4096,
     temperature=0.2,