Update app.py

app.py

@@ -39,7 +39,7 @@ with gr.Blocks() as foo:
     input = gr.File(file_count="directory")
     files = gr.Textbox()
     show = gr.Button(value="Show")
-    show.click(foo, input=input, output=files)
+    show.click(fn=foo, inputs=input, outputs=files)