Warning: Undefined array key

Just updated PHP from Version 8.0.24 to 8.1.11

Warning: Undefined array key “comments_pingbacks_clean_style” in /home/… …/wp-content/plugins/database-cleaner/classes/core.php on line 208

function add_clean_style_data ( $list ) {
$options = $this->get_all_options();
$data = array();
foreach ( $list as $item ) {
$data[] = array_merge( $item, [
‘clean_style’ => $options[ $item[‘item’] . ‘_clean_style’ ] <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
] );
}
return $data;
}

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