fix errors

app.py

@@ -10,7 +10,7 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def throw_a_dice(dice_side=20:str, amount=1:int)-> list: #it's import to specify the return type
+def throw_a_dice(dice_side:int=20, amount:int=1)-> list: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
     """Simulating dice throw. Return list of random values betwen 1 and dice_side 
     Args: