Update app.py

app.py

@@ -33,7 +33,7 @@ def enhance_prompt_with_qwen(prompt):
         system="You are Qwen, an image generation prompt enhancer",
         api_name="/model_chat"
     )
-    return result # Assuming the enhanced prompt is under 'output'
+    return str(result) # Assuming the enhanced prompt is under 'output'
 
 # Image generation query function
 def query(prompt, is_negative=False, steps=30, cfg_scale=7, sampler="DPM++ 2M Karras", seed=-1, strength=0.7, huggingface_api_key=None, use_dev=False):