Update app.py

app.py

@@ -24,6 +24,7 @@ class CustomSearchTool(Tool):
         super().__init__()
         self.search_tool = search_tool
         self.description = "A custom search tool that uses DuckDuckGo to perform web searches."
+        self.name = "custom_search_tool"
 
     def run(self, query):
         return self.search_tool.run(query)