v7

app.py

@@ -1050,8 +1050,20 @@ def create_application():
                 else:
                     i += 1
 
-            # Call the agent for this new user question
-            assistant_message, chart_fig = await stream_agent_response(question, pair_history)
+            # Call the agent for this new user question (defensive unpacking)
+            result = await stream_agent_response(question, pair_history)
+            if isinstance(result, tuple) and len(result) == 2:
+                assistant_message, chart_fig = result
+            elif isinstance(result, dict) and "content" in result:
+                assistant_message, chart_fig = result["content"], None
+            elif isinstance(result, str):
+                assistant_message, chart_fig = result, None
+            else:
+                logger.error("stream_agent_response returned unexpected value: %r", result)
+                assistant_message, chart_fig = (
+                    "## ❌ Error\n\nNo se recibió una respuesta válida del agente.",
+                    None,
+                )
 
             # Append assistant message back into messages history
             chat_history.append({"role": "assistant", "content": assistant_message})