diff --git a/src/applications/transactions/storage/PhabricatorModularTransactionType.php b/src/applications/transactions/storage/PhabricatorModularTransactionType.php
--- a/src/applications/transactions/storage/PhabricatorModularTransactionType.php
+++ b/src/applications/transactions/storage/PhabricatorModularTransactionType.php
@@ -68,7 +68,7 @@
   }
 
   public function newChangeDetailView() {
-    throw new PhutilMethodNotImplementedException();
+    return null;
   }
 
   public function getMailDiffSectionHeader() {