Error below the plugin list

Every time I get to the plugin list in admin interface, I see this at the bottom of the screen. Also tested on a clean 6.0 install with default theme.

Error: Unknown format specifier "?" in /var/www/u0998617/data/www/test.strategycon.ru/wp-content/plugins/foobox-image-lightbox/freemius/templates/forms/deactivation/retry-skip.php:23 Stack trace: #0 /var/www/u0998617/data/www/test.strategycon.ru/wp-content/plugins/foobox-image-lightbox/freemius/templates/forms/deactivation/retry-skip.php(23): sprintf('\xD0\x92\xD0\xBE\xD0\xB7\xD0\xBC\xD0\xBE\xD0\xB6\xD0\xBD\xD0...', '<a href='https:...') #1 /var/www/u0998617/data/www/test.strategycon.ru/wp-content/plugins/foobox-image-lightbox/freemius/includes/fs-core-functions.php(57): require('/var/www/u09986...') #2 /var/www/u0998617/data/www/test.strategycon.ru/wp-content/plugins/foobox-image-lightbox/freemius/includes/class-freemius.php(2619): fs_get_template('forms/deactivat...', Array) #3 /var/www/u0998617/data/www/test.strategycon.ru/wp-content/plugins/foobox-image-lightbox/freemius/includes/class-freemius.php(2498): Freemius->_get_uninstall_reasons('short-term') #4 /var/www/u0998617/data/www/test.strategycon.ru/wp-includes/class-wp-hook.php(307): Freemius->_add_deactivation_feedback_dialog_box('') #5 /var/www/u0998617/data/www/test.strategycon.ru/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #6 /var/www/u0998617/data/www/test.strategycon.ru/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #7 /var/www/u0998617/data/www/test.strategycon.ru/wp-admin/admin-footer.php(78): do_action('admin_footer', '') #8 /var/www/u0998617/data/www/test.strategycon.ru/wp-admin/plugins.php(784): require_once('/var/www/u09986...') #9 {main} thrown in /var/www/u0998617/data/www/test.strategycon.ru/wp-content/plugins/foobox-image-lightbox/freemius/templates/forms/deactivation/retry-skip.php on line 23