Update app.py

app.py

@@ -67,7 +67,7 @@ def merge_and_run(prompt, negative_prompt, shuffled_items, lora_1_scale=0.5, lor
   pipe.fuse_lora(lora_2_scale)
   
   if negative_prompt == "":
-    negative_prompt = False
+    negative_prompt = None
       
   image = pipe(prompt=prompt, negative_prompt=negative_prompt, num_inference_steps=20, width=768, height=768).images[0]
   del pipe