Nested nodes may already be removed during this process

diff --git a/wcfsetup/install/files/lib/system/bbcode/DomBBCodeParser.class.php b/wcfsetup/install/files/lib/system/bbcode/DomBBCodeParser.class.php
index eb4ceb4cddcac5861bfa5e5932a4d7b3046d8fcb..9b8df5f265864c343952636441b7a29b2b1dcd42 100644 (file)
--- a/wcfsetup/install/files/lib/system/bbcode/DomBBCodeParser.class.php
+++ b/wcfsetup/install/files/lib/system/bbcode/DomBBCodeParser.class.php
@@ -118,7 +118,7 @@ final class DomBBCodeParser extends SingletonFactory
             $node->setAttribute('data-attributes', \base64_encode(JSON::encode($attributes)));
         }
         foreach ($nodes as $node) {
-            $node->parentNode->removeChild($node);
+            $node->parentNode?->removeChild($node);
         }
     }