fix text content

app.py

@@ -204,7 +204,7 @@ def bot(
             content = msg.get("content")
 
             if isinstance(content, str):
-                processor_history.append({"role": role, "content": {"type": "text", "text": content}})
+                processor_history.append({"role": role, "content": [{"type": "text", "text": content}]})
             elif isinstance(content, tuple):
                 formatted_content = []
                 tmp_path, _ = content