Update app.py

app.py

@@ -141,7 +141,7 @@ def infer(
         ).images[0]
         timestamp = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
         rv_path = f"sd35_{timestamp}.png"
-        sd_image[0].save(rv_path,optimize=False,compress_level=0)
+        sd_image.save(rv_path,optimize=False,compress_level=0)
         upload_to_ftp(rv_path)
     else:
         print('-- generating image --')