Update app.py

app.py

@@ -18,6 +18,7 @@ from langchain.tools import BaseTool, StructuredTool, Tool, tool,DuckDuckGoSearc
 from langchain import LLMMathChain
 from pydantic import BaseModel, Field
 from langchain.tools import DuckDuckGoSearchRun
+from langchain_community.utilities import SerpAPIWrapper
 search = SerpAPIWrapper(serpapi_api_key='a8845c74bc619b37a2d2c338489ef8d2187e053b3bd38280aac8165b927a7267')
 t2 = Tool.from_function(
         name="Google Search",