Update app.py

app.py

@@ -144,17 +144,13 @@ def _launch_demo(args):
                             "url": f"data:image/jpeg;base64,{encode_image(q[0])}"
                         }
                     })        
-            elif q and q.strip(): 
+            else:
                 content.append({"type": "text", 'text': q})
                 messages.append({'role': 'user', 'content': content})
-                if a:
-                    messages.append({'role': 'assistant', 'content': [{"type": "text", 'text': a}]})
-                content = []
-            else:
-                continue
-
-            
                 
+                messages.append({'role': 'assistant', 'content': [{"type": "text", 'text': a}]})
+                content = []
+       
         messages.pop()
         responses = client.chat.completions.create(
                 model="Qwen2_5VL",