Update app.py

app.py

@@ -140,7 +140,7 @@ def inference(model_name, prompt, guidance, steps, n_images=1, width=512, height
     seed = random.randint(0, 2147483647)
 
   if torch.cuda.is_available():
-  generator = torch.Generator('cuda').manual_seed(seed)
+    generator = torch.Generator('cuda').manual_seed(seed)
 else:
   generator = torch.Generator().manual_seed(seed)