fix bug

app.py

@@ -151,8 +151,11 @@ def img_to_img(model_path, prompt, neg_prompt, img, strength, guidance, steps, w
 
 def replace_nsfw_images(results):
     for i in range(len(results.images)):
-      if results.nsfw_content_detected[i]:
-        results.images[i] = Image.open("nsfw.png")
+      try:
+        if results.nsfw_content_detected[i]:
+          results.images[i] = Image.open("nsfw.png")
+      except:
+        pass
     return results.images[0]
 
 css = """