Fatal error: Uncaught Error: Unknown format specifier "j"
in /home/platne/serwer202046/public_html/autoinstalator/trainers.beardydev.pl/wordpress21018/wp-content/plugins/woocommerce-memberships/src/emails/abstract-wc-memberships-user-membership-email.php on line 66

Call stack:

1. sprintf()
   wp-content/plugins/woocommerce-memberships/src/emails/abstract-wc-memberships-user-membership-email.php:66
2. WC_Memberships_User_Membership_Email::__construct()
   wp-content/plugins/woocommerce-memberships/src/emails/class-wc-memberships-user-membership-ending-soon-email.php:64
3. WC_Memberships_User_Membership_Ending_Soon_Email::__construct()
   wp-content/plugins/woocommerce-memberships/vendor/skyverge/wc-plugin-framework/woocommerce/class-sv-wc-plugin.php:747
4. SkyVerge\W\P\v\SV_WC_Plugin::load_class()
   wp-content/plugins/woocommerce-memberships/src/class-wc-memberships-emails.php:85
5. WC_Memberships_Emails::init_emails()
   wp-content/plugins/woocommerce-memberships/src/class-wc-memberships-emails.php:124
6. WC_Memberships_Emails::get_email_classes()
   wp-includes/class-wp-hook.php:308
7. WP_Hook::apply_filters()
   wp-includes/plugin.php:205
8. apply_filters()
   wp-content/plugins/woocommerce/includes/class-wc-emails.php:233
9. WC_Emails::init()
   wp-content/plugins/woocommerce/includes/class-wc-emails.php:190
10. WC_Emails::__construct()
    wp-content/plugins/woocommerce/includes/class-wc-emails.php:52
11. WC_Emails::instance()
    wp-content/plugins/woocommerce/includes/class-wc-api.php:180
12. WC_API::register_wp_admin_settings()
    wp-includes/class-wp-hook.php:308
13. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:332
14. WP_Hook::do_action()
    wp-includes/plugin.php:517
15. do_action()
    wp-includes/rest-api.php:577
16. rest_get_server()
    wp-includes/rest-api.php:403
17. rest_api_loaded()
    wp-includes/class-wp-hook.php:308
18. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:332
19. WP_Hook::do_action()
    wp-includes/plugin.php:565
20. do_action_ref_array()
    wp-includes/class-wp.php:399
21. WP::parse_request()
    wp-includes/class-wp.php:780
22. WP::main()
    wp-includes/functions.php:1334
23. wp()
    wp-blog-header.php:16
24. require()
    index.php:17