fix

app.py

@@ -38,7 +38,7 @@ def respond(
     query_embedding_np = query_embedding.cpu().numpy()
     distances, indices = index.search(query_embedding_np, k=1)
     relevant_document = documents[indices[0][0]]
-    messages = [{"role": "system", "content": system_message},{{"role": "system", "content": f"context: {relevant_document}"}}]
+    messages = [{"role": "system", "content": system_message},{"role": "system", "content": f"context: {relevant_document}"}]