Update app.py

app.py

@@ -196,8 +196,12 @@ class InternVLChatBot:
             chat_history = []
             if history:
                 for item in history:
-                    if len(item) == 2:
-                        chat_history.append((item[0], item[1]))
+                    if isinstance(item, dict) and "role" in item:
+                        if item["role"] == "user":
+                            last_user = item["content"]
+                        elif item["role"] == "assistant":
+                            chat_history.append((last_user, item["content"]))
+
             
             # Generate response
             if num_patches_list is not None:
@@ -221,10 +225,11 @@ class InternVLChatBot:
                 )
             
             # Update history
-            history.append([message, response])
-            
+            history.append({"role": "user", "content": message})
+            history.append({"role": "assistant", "content": response})
             return "", history, None, None
             
+            
         except Exception as e:
             logger.error(f"Error in chat: {str(e)}")
             error_msg = f"Sorry, I encountered an error: {str(e)}"