Update app.py

app.py

@@ -48,8 +48,8 @@ def infer(prompt, num_inference_steps):
         #negative_prompt = negative_prompt,
         guidance_scale = 7.0,
         num_inference_steps = num_inference_steps, 
-        width = width,
-        height = height,
+        width = 512,
+        height = 512,
         num_images_per_prompt=num_images,
     ).images[0]