From 4761bc4a02ac510fc9f215f30d6cd11789c57e4f Mon Sep 17 00:00:00 2001
From: Eileen McNaughton <emcnaughton@wikimedia.org>
Date: Fri, 17 Jun 2022 16:15:51 +1200
Subject: [PATCH] Handle empty date token gracefully

---
 Civi/Token/TokenProcessor.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Civi/Token/TokenProcessor.php b/Civi/Token/TokenProcessor.php
index 7ffdc64ffb..eabab5296f 100644
--- a/Civi/Token/TokenProcessor.php
+++ b/Civi/Token/TokenProcessor.php
@@ -500,6 +500,9 @@ class TokenProcessor {
           require_once 'CRM/Core/Smarty/plugins/modifier.crmDate.php';
           return \smarty_modifier_crmDate($value->format('Y-m-d H:i:s'), $filter[1] ?? NULL);
         }
+        if ($value === '') {
+          return $value;
+        }
 
       default:
         throw new \CRM_Core_Exception("Invalid token filter: $filter");
-- 
2.25.1