Update app.py

app.py

@@ -49,7 +49,7 @@ def web_search(query: str) -> str:
     try:
         search_tool = DuckDuckGoSearchTool()
         results = search_tool(query)
-        if not results or "No results found" in results:
+        if not results or "No results found." in results:
             return f"No results for query: '{query}'. Try again."
         return f"Search results:'{query}':\n\n{results}"
     except Exception as e: