Update app.py

gradio -> gr in the code I should have tested :)

app.py

@@ -484,7 +484,7 @@ def gen_ims(n_rows, model='both'):
   return (grid*255).astype(np.uint8)
 iface = gr.Interface(fn=gen_ims, 
   inputs=[gr.inputs.Slider(minimum=1, maximum=6, step=1, default=3,label="N rows"),
-  gradio.inputs.Dropdown(["both", "light", "dark"], type="value", default="dark", label="Orb Type (model)", optional=False)], 
+  gr.inputs.Dropdown(["both", "light", "dark"], type="value", default="dark", label="Orb Type (model)", optional=False)], 
   outputs=[gr.outputs.Image(type="numpy", label="Generated Images")],
   title='Demo for https://huggingface.co/johnowhitaker/orbgan_e1'
 )