Update app.py

app.py

@@ -21,7 +21,8 @@ def split_image(image):
             region = region.resize((512, 512), Image.ANTIALIAS)
 
             with tempfile.NamedTemporaryFile(suffix='.jpg') as temp:
-                images.append(region.save(temp.name))
+                region.save(temp.name)
+                images.append(temp.name)
 
 
     with zipfile.ZipFile("images.zip", 'w') as zip: