Update app.py

app.py

@@ -64,7 +64,7 @@ class BasicAgent:
         print(f"Agent returning fixed answer: {fixed_answer}")
         return fixed_answer, state
 
-    def assistant(state: State):
+    def assistant(self, state: State):
         # System message
         textual_description_of_tool="""
             search_tool(question: str) -> str:
@@ -88,7 +88,7 @@ class BasicAgent:
             "question": state["question"]
         }
 
-    def search_tool(question: str, max_length: int = 1024) -> str:
+    def search_tool(self, question: str, max_length: int = 1024) -> str:
         """
             Search info in the web.