Update crewai/agent.py

crewai/agent.py

@@ -1,7 +1,14 @@
 import uuid
 from typing import Any, List, Optional
-
-from langchain_openai.chat_models import ChatOpenAI
+'''
+from langchain.prompts.chat import (
+    ChatPromptTemplate,
+    HumanMessagePromptTemplate,
+    SystemMessagePromptTemplate,
+)
+from langchain.schema import HumanMessage, SystemMessage
+'''
+from langchain_community.chat_models import ChatOpenAI
 
 from langchain.agents.format_scratchpad import format_log_to_str
 from langchain.memory import ConversationSummaryMemory