From f02e55008b83f0d4ec8df13d4f7922b5e400d5ed Mon Sep 17 00:00:00 2001
From: Jefferson49 <81484983+Jefferson49@users.noreply.github.com>
Date: Sat, 27 Aug 2022 23:02:30 +0200
Subject: [PATCH] Data Fix via control panel doesn't work (this is intended).
 'Added some code the "sourcesToFix" method to avoid errors in the front end.

Fixes #9
---
 RepositoryHierarchy.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/RepositoryHierarchy.php b/RepositoryHierarchy.php
index 637551c..8097631 100644
--- a/RepositoryHierarchy.php
+++ b/RepositoryHierarchy.php
@@ -494,6 +494,9 @@ public function fixOptions(Tree $tree): string
      */
     protected function sourcesToFix(Tree $tree, array $params): ?Collection
     {
+        //If data fix is called from wrong context, return
+        if (!isset($this->repository_xref)) return null;
+
         if ($params[CallNumberCategory::VAR_CATEGORY_NAME] === '' || $params[self::VAR_DATA_FIX_CATEGORY_NAME_REPLACE] === '') {
             return null;
         }