Update app.py

app.py

@@ -37,7 +37,7 @@ Settings.callback_manager = callback_manager
 # set up LLM
 #llm = Groq(model="llama3-8b-8192")#"llama3-8b-8192")
 OPENAI_API_KEY = os.getenv('OPENAI_API_KEY')
-llm = OpenAI(model="gpt-3.5-turbo")
+llm = OpenAI(model="gpt-3.5-turbo",api_key = OPENAI_API_KEY)
 Settings.llm = llm
 
 # set up embedding model