Update app.py

app.py

@@ -144,7 +144,7 @@ class ToolRegistry:
     def load_web_tools(model, browser, text_limit=20000):
         """Initialize and return web-related tools."""
         return [
-            GoogleSearchTool(provider=serper),
+            GoogleSearchTool(provider="serper"),  
             VisitTool(browser),
             PageUpTool(browser),
             PageDownTool(browser),
@@ -153,7 +153,7 @@ class ToolRegistry:
             ArchiveSearchTool(browser),
             TextInspectorTool(model, text_limit),
         ]
-
+        
     @staticmethod
     def load_vision_tools():
         """Initialize and return vision-related tools."""