Update app.py

app.py

@@ -104,11 +104,11 @@ def generate(prompt, quality_tags, neg_prompt, seed, scale, width, height, steps
         i2i_image, i2i_str, i2i_noise
     )
     if not isinstance(img_data, bytes):
-        return None, payload
+        return [None], payload
     today_count += 1
     img = image_from_bytes(img_data)
-    
-    return img, payload
+    filename = str(today_count).rjust(5, '0') + '-' + str(payload['parameters']['seed']) + '.png'
+    return [(img, filename)], payload
 
 
 def preview_ui():