From 0c78cd7125959df5b1a2bb505f171a3d214c2ee5 Mon Sep 17 00:00:00 2001
From: Jason Nance <103449147+jason-nance@users.noreply.github.com>
Date: Mon, 8 Dec 2025 15:57:49 -0500
Subject: [PATCH] Move query params to create_pass_through_route call (#17660)

Fix error calling Langfuse passthrough endpoint.
---
 litellm/proxy/vertex_ai_endpoints/langfuse_endpoints.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/litellm/proxy/vertex_ai_endpoints/langfuse_endpoints.py b/litellm/proxy/vertex_ai_endpoints/langfuse_endpoints.py
index 684e2ad061..ce27c830f6 100644
--- a/litellm/proxy/vertex_ai_endpoints/langfuse_endpoints.py
+++ b/litellm/proxy/vertex_ai_endpoints/langfuse_endpoints.py
@@ -128,12 +128,12 @@ async def langfuse_proxy_route(
         endpoint=endpoint,
         target=str(updated_url),
         custom_headers={"Authorization": langfuse_combined_key},
+        query_params=dict(request.query_params),  # type: ignore
     )  # dynamically construct pass-through endpoint based on incoming path
     received_value = await endpoint_func(
         request,
         fastapi_response,
         user_api_key_dict,
-        query_params=dict(request.query_params),  # type: ignore
     )
 
     return received_value