repair multiturn

app.py

@@ -95,15 +95,28 @@ def chat_predict(message, history, max_length, temperature, top_p, repetition_pe
         if system_prompt:
             messages.append({"role": "system", "content": system_prompt})
             
-        # history is a list of lists: [[user_msg, bot_msg], ...]
-        for user_msg, assistant_msg in history:
-            if user_msg:
-                messages.append({"role": "user", "content": user_msg})
-            if assistant_msg:
-                # Clean up history messages (remove stats if they were appended)
-                if "\n\n---\n*Generated" in assistant_msg:
-                    assistant_msg = assistant_msg.split("\n\n---\n*Generated")[0]
-                messages.append({"role": "assistant", "content": assistant_msg})
+        # Handle history which can be list of dicts with multimodal content
+        for msg in history:
+            role = msg.get("role", "user")
+            content = msg.get("content", "")
+            
+            # Extract text if content is a list (multimodal format in Gradio 6)
+            if isinstance(content, list):
+                text_content = ""
+                for part in content:
+                    if isinstance(part, dict) and part.get("type") == "text":
+                        text_content += part.get("text", "")
+                content = text_content
+            
+            # Ensure content is string
+            if not isinstance(content, str):
+                content = str(content)
+
+            # Clean up assistant stats
+            if role == "assistant" and "\n\n---\n*Generated" in content:
+                content = content.split("\n\n---\n*Generated")[0]
+                
+            messages.append({"role": role, "content": content})
             
         messages.append({"role": "user", "content": message})