Update app.py

app.py

@@ -191,7 +191,7 @@ def img2img(input_image, prompt, negative_prompt, model, width, height):
         "denoising_strength": 0.7,
         "prompt": prompt,
         "negative_prompt": negative_prompt,
-        "model": i2i_model,
+        "model": i2i_model.value,
         "steps": 30,
         "sampler": "DPM++ SDE",
         "cfg_scale": 7,