From 8832ce18e4a3c88a6965f4cbdcd23e799979a40a Mon Sep 17 00:00:00 2001
From: kjgarza <kgarza@datacite.org>
Date: Fri, 27 Mar 2020 18:12:10 +0100
Subject: [PATCH] hanlde empty

---
 app/controllers/application_controller.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 35ecfe299..91ee69fb4 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -73,7 +73,7 @@ def authenticate_user_with_basic_auth!
   def authenticate_user!
     type, credentials = type_and_credentials_from_request_headers
     return false if credentials.blank?
-    raise JWT::VerificationError if ENV["JWT_BLACKLISTED"].split(",").include?(credentials)
+    raise JWT::VerificationError if (ENV["JWT_BLACKLISTED"] || "").split(",").include?(credentials)
 
     @current_user = User.new(credentials, type: type)
     fail CanCan::AuthorizationNotPerformed if @current_user.errors.present?