fix error

app.py

@@ -1,5 +1,4 @@
 import gradio as gr
-from gradio.components import Image, Textbox
 from fastai.vision.all import *
 
 
@@ -27,8 +26,8 @@ eg = ['cam_mit.jpg', 'dunphys.jpg', 'group.jpg']
 
 gr.Interface(
     fn=predict,
-    inputs=Image(shape=(512, 512)),
-    outputs=Textbox(type="number", label="Number of faces"),
+    inputs=gr.inputs.Image(shape=(512, 512)),
+    outputs=gr.outputs.Textbox(type="number", label="Number of faces"),
     title=title,
     description=description,
     examples=eg,