Update excel_chat.py

excel_chat.py

@@ -74,7 +74,7 @@ def ask_llm(query, user_input, client_index, user, keys):
             else:
                 keys[0] = keys[1][0]
                 
-            client = Groq(api_key=os.environ[user['api_keys'][keys[0]]])
+            client = Groq(api_key= os.getenv(keys[0]))
             chat_completion = client.chat.completions.create(
                 messages=messages,
                 model='mixtral-8x7b-32768',