Update app.py

app.py

@@ -23,7 +23,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     return "What magic will you build ?"
 # -- my tool
 @tool
-def get_image(img_description:str)-> filepath: #it's import to specify the return type
+def get_image(img_description:str)-> 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 generate an image from a textual description 
     Args: