diff --git a/backend/src/repository/rag/chat.py b/backend/src/repository/rag/chat.py
index 21ea4f0..89fc3cf 100644
--- a/backend/src/repository/rag/chat.py
+++ b/backend/src/repository/rag/chat.py
@@ -137,7 +137,7 @@ async def get_context_by_question(input_msg: str):
             except Exception as e:
                 loguru.logger.error(e)
             # collection name for testing
-            context = vector_db.search(embedd_input, 1, collection_name="aisuko_squad01")
+            context = vector_db.search(list(embedd_input), 1, collection_name="aisuko_squad01")
             return context or InferenceHelper.instruction
 
         current_context = await get_context_by_question(input_msg)