Update app.py

app.py

@@ -57,7 +57,7 @@ class WikipediaTool(Tool):
         }
         self.output_type="string"
        
-    def __call__(self, query: str, sentences: int = 2) -> str:
+    def forward(self, query: str, sentences: int = 2) -> str:
         try:
             return wikipedia.summary(query, sentences=sentences)
         except wikipedia.exceptions.DisambiguationError as e: