From c89fad06e0b1404169867e29e79e1f2929a8f279 Mon Sep 17 00:00:00 2001
From: Ishaan Jaff <ishaanjaffer0324@gmail.com>
Date: Fri, 18 Jul 2025 18:45:13 -0700
Subject: [PATCH] fix vtx linting

---
 litellm/llms/vertex_ai/vertex_llm_base.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/litellm/llms/vertex_ai/vertex_llm_base.py b/litellm/llms/vertex_ai/vertex_llm_base.py
index f50a1d236e5..ae43e1fd167 100644
--- a/litellm/llms/vertex_ai/vertex_llm_base.py
+++ b/litellm/llms/vertex_ai/vertex_llm_base.py
@@ -36,7 +36,7 @@ class VertexBase:
         self._credentials: Optional[GoogleCredentialsObject] = None
         self._credentials_project_mapping: Dict[
             Tuple[Optional[VERTEX_CREDENTIALS_TYPES], Optional[str]],
-            GoogleCredentialsObject,
+            Tuple[GoogleCredentialsObject, str],
         ] = {}
         self.project_id: Optional[str] = None
         self.async_handler: Optional[AsyncHTTPHandler] = None
@@ -464,6 +464,10 @@ class VertexBase:
                     credential_project_id,
                 )
 
+        # Check if credentials are None before accessing attributes
+        if _credentials is None:
+            raise ValueError("Credentials are None after loading")
+
         if _credentials.expired:
             verbose_logger.debug(
                 f"Credentials expired, refreshing for project_id: {project_id}"