Changes to be committed:

app.py

@@ -55,7 +55,8 @@ def image_to_image(prompt, image, dimension, flux_client):
     input_image=handle_file(padded_image_path),
     prompt=prompt,
     guidance_scale=2.5,
-    nag_negative_prompt="",
+    negative_prompt=None,
+    nag_negative_prompt="Low resolution, blurry, lack of details",
     nag_scale=5,
     num_inference_steps=25,
     randomize_seed=True,