diff --git a/rag/llm/rerank_model.py b/rag/llm/rerank_model.py
index 58ea0decb..e2eb3a93d 100644
--- a/rag/llm/rerank_model.py
+++ b/rag/llm/rerank_model.py
@@ -452,4 +452,5 @@ class QWenRerank(Base):
             for r in resp.output.results:
                 rank[r.index] = r.relevance_score
             return rank, resp.usage.total_tokens
-        return rank, 0
\ No newline at end of file
+        else:
+            raise ValueError(f"Error calling QWenRerank model {self.model_name}: {resp.status_code} - {resp.text}")