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Currently on WordPress 6.1.1 and PHP 8.2 and I’m seeing these warnings from this plugin (version 2.9.3):
Warning: Cannot modify header information - headers already sent by (output started at/wp-content/plugins/simple-lightbox/includes/class.options.php:501) in /wp-admin/includes/misc.php on line 1416
Warning: Cannot modify header information - headers already sent by (output started at /wp-content/plugins/simple-lightbox/includes/class.options.php:501) in /wp-includes/functions.php on line 6865
Warning: Cannot modify header information - headers already sent by (output started at /wp-content/plugins/simple-lightbox/includes/class.options.php:501) in /wp-admin/admin-header.php on line 9