fatal error při dokončení lekce (Sensei LMS)

Dobrý den,

poradili byste mi prosím s touto chybou, která se mi objeví po dokončení lekce (sensei LMS plugin) na webu www.protidavu.cz?

Fatal error: Uncaught Error: Call to undefined function get_current_screen() in /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-content/plugins/dco-comment-attachment/includes/class-dco-ca-admin.php:262 Stack trace: #0 /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-includes/class-wp-hook.php(294): DCO_CA_Admin->update_attachment(‚461‘) #1 /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(false, Array) #2 /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-includes/comment.php(2557): do_action(‚edit_comment‘, ‚461‘, Array) #4 /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-content/plugins/sensei-lms/includes/class-sensei-utils.php(686): wp_update_comment(Array) #5 /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-content/plugins/sensei-lms/includes/class-sensei-frontend.php(721 in /data/web/virtuals/233275/virtual/www/domains/protidavu.cz/wp-content/plugins/dco-comment-attachment/includes/class-dco-ca-admin.php on line 262

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