From 18af35d928956b3ebae636a0996add74d683bec8 Mon Sep 17 00:00:00 2001
From: Luke Towers <github@luketowers.ca>
Date: Thu, 30 Jul 2020 10:54:09 -0600
Subject: [PATCH] Prevent error from occurring when the active sorting column
 is hidden from the results.

Fixes #5227
---
 modules/backend/widgets/Lists.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/backend/widgets/Lists.php b/modules/backend/widgets/Lists.php
index bc83c11f6..51a425c2c 100644
--- a/modules/backend/widgets/Lists.php
+++ b/modules/backend/widgets/Lists.php
@@ -522,7 +522,7 @@ class Lists extends WidgetBase
         /*
          * Apply sorting
          */
-        if (($sortColumn = $this->getSortColumn()) && !$this->showTree) {
+        if (($sortColumn = $this->getSortColumn()) && !$this->showTree && in_array($sortColumn, array_keys($this->getVisibleColumns()))) {
             if (($column = array_get($this->allColumns, $sortColumn)) && $column->valueFrom) {
                 $sortColumn = $this->isColumnPivot($column)
                     ? 'pivot_' . $column->valueFrom