Update app.py

app.py

@@ -106,7 +106,7 @@ with demo:
                     slide = gr.Slider(label="guidance_scale", minimum=0, maximum=100, value=50)
                     gall = gr.Gallery(elem_id='gallery').style(grid=[4])
                 greet_btn = gr.Button("Generate")
-                greet_btn.click(fn=ex_g, inputs=[picker, slide] outputs=gall)
+                greet_btn.click(fn=ex_g, inputs=[picker, slide], outputs=gall)
     gr.HTML(
         """
         <div class="footer">