Update app.py

app.py

@@ -228,7 +228,7 @@ model_inpaint = None
 def inpaint(image, invert):
 #    image = resize_image(img, res)
 #    color = HWC3(image["image"])
-    color = HWC3(image["backbround"])
+    color = HWC3(image["background"])
     if(invert):
 #        alpha = image["mask"][:, :, 0:1]
         alpha = image["layers"][0][:, :, 0:1]