From 02756f583d5a3f0c0c8ab108a1877cace952969c Mon Sep 17 00:00:00 2001
From: Brent Shaffer <betterbrent@google.com>
Date: Wed, 13 Dec 2023 11:52:04 -0800
Subject: [PATCH] fix: php warning in AuthTokenMiddleware

---
 src/Middleware/AuthTokenMiddleware.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Middleware/AuthTokenMiddleware.php b/src/Middleware/AuthTokenMiddleware.php
index b10cf9bff..798766efa 100644
--- a/src/Middleware/AuthTokenMiddleware.php
+++ b/src/Middleware/AuthTokenMiddleware.php
@@ -132,7 +132,7 @@ private function addAuthHeaders(RequestInterface $request)
         ) {
             $token = $this->fetcher->fetchAuthToken();
             $request = $request->withHeader(
-                'authorization', 'Bearer ' . ($token['access_token'] ?? $token['id_token'])
+                'authorization', 'Bearer ' . ($token['access_token'] ?? $token['id_token'] ?? '')
             );
         } else {
             $headers = $this->fetcher->updateMetadata($request->getHeaders(), null, $this->httpHandler);