Update app.py

app.py

@@ -41,7 +41,7 @@ class CustomDuckDuckGoSearchTool(DuckDuckGoSearchTool):
     output_type = "string"
 
     def __init__(self, max_results: int = 10, rate_limit: float | None = 1.0, backend: str = "auto", **kwargs):
-        super().__init__(max_results=max_results, rate_limit=rate_limit, **kwargs)
+        super().__init__(max_results=max_results, **kwargs)
         self.backend = backend # Add "backend" as new parameter
 
     def forward(self, query: str) -> str: