Update app.py

app.py

@@ -33,7 +33,8 @@ pc = Pinecone(api_key=PINECONE_API_KEY)
 
 ###NEW
 # Retrieve the LangSmith API Key from environment variable
-LANGCHAIN_API_KEY = os.getenv("LANGCHAIN_API_KEY")
+os.environ["LANGCHAIN_API_KEY"] = st.secrets["LANGCHAIN_API_KEY"]
+# LANGCHAIN_API_KEY = os.getenv("LANGCHAIN_API_KEY")
 os.environ["LANGCHAIN_API_KEY"] = str(os.getenv("LANGCHAIN_API_KEY"))
 os.environ["LANGCHAIN_TRACING_V2"] = "true"
 os.environ["LANGCHAIN_ENDPOINT"] = "https://api.smith.langchain.com"