Title: Php 8.0 error Last modified: July 20, 2021 --- # Php 8.0 error * Resolved [arskrigitsioniets](https://wordpress.org/support/users/arskrigitsioniets/) * (@arskrigitsioniets) * [4 years, 10 months ago](https://wordpress.org/support/topic/php-8-0-error-3/) * I get the following error in the footer of installed plugins menu, related to this plugin after updating to php8.0 * `Error: Unknown format specifier "�" in /var/www/u0998617/data/www/strategycon. ru/wp-content/plugins/featured-images-for-rss-feeds/includes/freemius/templates/ forms/deactivation/retry-skip.php:23 Stack trace: #0 /var/www/u0998617/data/www/ strategycon.ru/wp-content/plugins/featured-images-for-rss-feeds/includes/freemius/ templates/forms/deactivation/retry-skip.php(23): sprintf('\xD0\x92\xD0\xBE\xD0\ xB7\xD0\xBC\xD0\xBE\xD0\xB6\xD0\xBD\xD0...', '_get_uninstall_reasons('long-term') #4 /var/www/u0998617/ data/www/strategycon.ru/wp-includes/class-wp-hook.php(292): Freemius->_add_deactivation_feedback_dialog_box('')# 5 /var/www/u0998617/data/www/strategycon.ru/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array) #6 /var/www/u0998617/data/www/strategycon. ru/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #7 /var/www/u0998617/ data/www/strategycon.ru/wp-admin/admin-footer.php(78): do_action('admin_footer','')# 8 /var/www/u0998617/data/www/strategycon.ru/wp-admin/plugins.php(782): require_once('/ var/www/u09986...') #9 {main} thrown in /var/www/u0998617/data/www/strategycon. ru/wp-content/plugins/featured-images-for-rss-feeds/includes/freemius/templates/ forms/deactivation/retry-skip.php on line 23` Viewing 1 replies (of 1 total) * Plugin Author [5 Star Plugins (Rob)](https://wordpress.org/support/users/5starplugins/) * (@5starplugins) * [4 years, 10 months ago](https://wordpress.org/support/topic/php-8-0-error-3/#post-14681736) * Hi [@arskrigitsioniets](https://wordpress.org/support/users/arskrigitsioniets/) thanks for reporting this issue, we’ll pass it along to the Freemius.com team, as we use their SDK for our premium checkout and opt-in features. I believe they’ll need to issue an SDK update, and then we’ll update our SDK as well, and push out a new version to address this issue. * It doesn’t sound like it’s a Fatal Error, and should not cause any site issues; you can turn off WP_DEBUG so this output doesn’t affect the admin area until it’s resolved. Viewing 1 replies (of 1 total) The topic ‘Php 8.0 error’ is closed to new replies. * ![](https://ps.w.org/featured-images-for-rss-feeds/assets/icon-256x256.png?rev =1546995) * [Featured Images in RSS for Mailchimp & More](https://wordpress.org/plugins/featured-images-for-rss-feeds/) * [Frequently Asked Questions](https://wordpress.org/plugins/featured-images-for-rss-feeds/#faq) * [Support Threads](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/) * [Active Topics](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/unresolved/) * [Reviews](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/reviews/) ## Tags * [PHP 8.0](https://wordpress.org/support/topic-tag/php-8-0/) * 1 reply * 2 participants * Last reply from: [5 Star Plugins (Rob)](https://wordpress.org/support/users/5starplugins/) * Last activity: [4 years, 10 months ago](https://wordpress.org/support/topic/php-8-0-error-3/#post-14681736) * Status: resolved