Update app.py

Updated error messages get_web_search_results

app.py

@@ -24,14 +24,13 @@ def get_web_search_results(query: str)-> str: #it's import to specify the return
     """A tool that searchs the web using a query.
     Args:
         query: A string representing a valid web query. IMPORTANT: Follow type str format strictly e.g. 'pictures of cats'.
-        Incorrect formatting (such as, query='picture of cats') will result in None being returned. 
     """
     try:
         results = DuckDuckGoSearchTool.forward(query)
         if results and results != "None":
             return results
         else:
-            return "Your query may be incorrectly formatted. Ensure it is of type str e.g. 'bananas'"
+            return "Your query may be incorrectly formatted or there may be an issue with search engine."
     except Exception as e:
         return f"{query} is an invalid query"