needs dict, not string

app.py

@@ -7,6 +7,7 @@ from services.indexing import create_symptom_index
 import torchaudio.transforms as T
 import re
 import logging, sys
+import json
 
 
 logging.basicConfig(stream=sys.stdout, level=logging.INFO, force=True)
@@ -116,6 +117,11 @@ def on_submit(symptoms_text, history):
     yield history, None, "\n".join(log)
 
     # Final assistant message
+    if isinstance(raw, str):
+        try:
+            raw = json.loads(raw)
+        except Exception:
+            pass  # Optionally handle or log the error
     assistant_msg = format_response_for_user(raw)
     history = history + [{"role": "assistant", "content": assistant_msg}]
     msg = "✅ Final response appended"