From 1d4815645ab37e6fe188b901534d26132fcf7e9a Mon Sep 17 00:00:00 2001
From: Vladimir Roudakov <44088-VladimirAus@users.noreply.drupalcode.org>
Date: Sun, 5 Mar 2023 02:05:00 +1000
Subject: [PATCH] Issue #3345981: Initial class save causes array_merge error

---
 src/Service/BlockClassHelperService.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Service/BlockClassHelperService.php b/src/Service/BlockClassHelperService.php
index f008467..8d6e87d 100644
--- a/src/Service/BlockClassHelperService.php
+++ b/src/Service/BlockClassHelperService.php
@@ -184,7 +184,7 @@ class BlockClassHelperService {
       $config = $this->configFactory->getEditable('block_class.settings');
 
       // Get the current classes stored.
-      $block_classes_stored = $config->get('block_classes_stored');
+      $block_classes_stored = $config->get('block_classes_stored') ?? [];
 
       // Get the current class and export to array.
       $current_block_classes = explode(' ', $block_classes ?? '');
-- 
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