Update excel_chat.py

excel_chat.py

@@ -59,7 +59,7 @@ def ask_llm(query, input, client_index, user):
             model='mistral-medium',
         )
     elif client_index == "Claude Opus":
-        client = anthropic.Anthropic(api_key=os.environ[user['api_keys']['claude'])
+        client = anthropic.Anthropic(api_key=os.environ[user['api_keys']['claude']])
         chat_completion = client.messages.create(
             model="claude-3-opus-20240229",
             max_tokens=350,