Uncaught TypeError: Cannot access offset of type string on string

Somehow that’s possible. As with previous reports, the employee whose interaction led to the error did not notice it and we cannot retrace it, either.

It did not repeat (so far) and did not impede the plugin otherwise.

Newest versions, PHP 8.1

PHP Fatal error:  Uncaught TypeError: Cannot access offset of type string on string in /srv/wp-content/plugins/dhl-for-woocommerce/includes/class-pr-dhl-wc-order-paket.php:692
Stack trace:
#0 /srv/wp-content/plugins/dhl-for-woocommerce/includes/abstract-pr-dhl-wc-order.php(295): PR_DHL_WC_Order_Paket->delete_label_args('4450198')
#1 /srv/wp-includes/class-wp-hook.php(307): PR_DHL_WC_Order->delete_label_ajax('')
#2 /srv/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters('', Array)
#3 /srv/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
#4 /srv/wp-admin/admin-ajax.php(187): do_action('wp_ajax_wc_ship...')
#5 {main}
  thrown in /srv/wp-content/plugins/dhl-for-woocommerce/includes/class-pr-dhl-wc-order-paket.php on line 692