Update app.py

app.py

@@ -11,11 +11,11 @@ from Gradio_UI import GradioUI
 @tool
 def memory_size()-> str: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that generates sticker images based on topics in the context window 
+    """A tool that provides the lenght of messages in the agent memory 
     Args:
         None
     """
-    return len(agent.memory) 
+    return str(len(agent.memory)) 
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
@@ -50,7 +50,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[DuckDuckGoSearchTool, memory_size, image_generation_tool, final_answer], ## add your tools here (don't remove final answer)
+    tools=[memory_size, image_generation_tool, final_answer], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,