From 0175c4cf273240db452eb1db588322e650c6fa05 Mon Sep 17 00:00:00 2001
From: Ben Holt <bholt+github@edx.org>
Date: Wed, 5 May 2021 12:29:13 -0400
Subject: [PATCH] Guarded for undefined headers in getOutlineTabData

---
 src/course-home/data/api.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/course-home/data/api.js b/src/course-home/data/api.js
index b39379db..96501be7 100644
--- a/src/course-home/data/api.js
+++ b/src/course-home/data/api.js
@@ -197,6 +197,7 @@ export async function getOutlineTabData(courseId) {
     data,
     headers,
   } = tabData;
+
   const accessExpiration = camelCaseObject(data.access_expiration);
   const canShowUpgradeSock = data.can_show_upgrade_sock;
   const courseBlocks = data.course_blocks ? normalizeOutlineBlocks(courseId, data.course_blocks.blocks) : {};
@@ -209,7 +210,7 @@ export async function getOutlineTabData(courseId) {
   const hasEnded = data.has_ended;
   const offer = camelCaseObject(data.offer);
   const resumeCourse = camelCaseObject(data.resume_course);
-  const timeOffsetMillis = getTimeOffsetMillis(headers.date, requestTime, responseTime);
+  const timeOffsetMillis = getTimeOffsetMillis(headers && headers.date, requestTime, responseTime);
   const verifiedMode = camelCaseObject(data.verified_mode);
   const welcomeMessageHtml = data.welcome_message_html;