Title: Fatal error: Uncaught ValueError: Unknown format specifier “S” Last modified: June 27, 2022 --- # Fatal error: Uncaught ValueError: Unknown format specifier “S” * Resolved [josepedrodiaz](https://wordpress.org/support/users/josepedrodiaz/) * (@josepedrodiaz) * [3 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-s/) * Ithemes security pro is returning this error on my site: * Fatal error: Uncaught ValueError: Unknown format specifier “S” in /code/web/wp- content/plugins/ithemes-security-pro/pro/malware-scheduling/class-itsec-malware- scheduling.php:149 * ``` Stack trace: #0 /code/web/wp-content/plugins/ithemes-security-pro/pro/malware-scheduling/class-itsec-malware-scheduling.php(149): sprintf('The %Site Scan ...', '') #1 /code/web/wp/wp-includes/class-wp-hook.php(307): ITSEC_Malware_Scheduling->notification_strings(Array) #2 /code/web/wp/wp-includes/plugin.php(191): WP_Hook->apply_filters(Array, Array) #3 /code/web/wp-content/plugins/ithemes-security-pro/core/modules/notification-center/class-notification-center.php(222): apply_filters('itsec_malware-s...', Array) #4 /code/web/wp-content/plugins/ithemes-security-pro/core/modules/notification-center/validator.php(76): ITSEC_Notification_Center->get_notification_strings('malware-schedul...') #5 /code/web/wp-content/plugins/ithemes-security-pro/core/lib/validator.php(42): ITSEC_Notification_Center_Validator->sanitize_settings() #6 /code/web/wp-content/plugins/ithemes-security-pro/core/lib/settings.php(77): ITSEC_Validator->validate(Array) #7 /code/web/wp-content/plugins/ithemes-security-pro/core/modules.php(256): ITSEC_Settings->set_all(Array) #8 /code/web/wp-content/plugins/ithemes-security-pro/core/modules/notification-center/class-notification-center.php(792): ITSEC_Modules::set_settings('notification-ce...', Array) #9 /code/web/wp-content/plugins/ithemes-security-pro/core/modules/notification-center/class-notification-center.php(742): ITSEC_Notification_Center->send_scheduled_notifications(Array) #10 /code/web/wp-content/plugins/ithemes-security-pro/core/modules/notification-center/class-notification-center.php(698): ITSEC_Notification_Center->check_notification_schedule_accurate(Array) #11 /code/web/wp/wp-includes/class-wp-hook.php(307): ITSEC_Notification_Center->check_notification_schedule_fast('') #12 /code/web/wp/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #13 /code/web/wp/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #14 /code/web/wp/wp-settings.php(598): do_action('init') #15 /code/web/wp-config.php(218): require_once('/code/web/wp/wp...') #16 /code/web/wp/wp-load.php(55): require_once('/code/web/wp-co...') #17 /code/web/wp/wp-blog-header.php(13): require_once('/code/web/wp/wp...') #18 /code/web/index.php(6): require('/code/web/wp/wp...') #19 {main} thrown in /code/web/wp-content/plugins/ithemes-security-pro/pro/malware-scheduling/class-itsec-malware-scheduling.php on line 149 ``` Viewing 3 replies - 1 through 3 (of 3 total) * [nlpro](https://wordpress.org/support/users/nlpro/) * (@nlpro) * [3 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-s/#post-15775145) * Hi josepedrodiaz, * It’s a known bug in the 6.8.5 or older release. * To get it fixed you should update to the latest plugin release (7.1.3). * If you prefer not to update you should fix the bug yourself in the ithemes-security- pro/pro/malware-scheduling/class-itsec-malware-scheduling.php (#149) file. It’s an easy fix 😉 * +++++ To prevent any confusion, I’m not iThemes +++++ * [nlpro](https://wordpress.org/support/users/nlpro/) * (@nlpro) * [3 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-s/#post-15862876) * Hi josepedrodiaz, * If you require no further assistance please mark this topic as “Resolved”. * Plugin Support [chandelierrr](https://wordpress.org/support/users/shanedelierrr/) * (@shanedelierrr) * [3 years, 9 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-s/#post-15941212) * Hi [@josepedrodiaz](https://wordpress.org/support/users/josepedrodiaz/), I hope the information provided by nlpro helped resolve the issue. Since we haven’t received a response, I’ll mark this post resolved. If you still need some assistance, feel free to open a new support topic, and we’d be happy to assist. Thank you! Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘Fatal error: Uncaught ValueError: Unknown format specifier “S”’ is closed to new replies. * ![](https://ps.w.org/better-wp-security/assets/icon.svg?rev=3529351) * [Kadence Security – Password, Two Factor Authentication, and Brute Force Protection](https://wordpress.org/plugins/better-wp-security/) * [Frequently Asked Questions](https://wordpress.org/plugins/better-wp-security/#faq) * [Support Threads](https://wordpress.org/support/plugin/better-wp-security/) * [Active Topics](https://wordpress.org/support/plugin/better-wp-security/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/better-wp-security/unresolved/) * [Reviews](https://wordpress.org/support/plugin/better-wp-security/reviews/) * 3 replies * 3 participants * Last reply from: [chandelierrr](https://wordpress.org/support/users/shanedelierrr/) * Last activity: [3 years, 9 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-s/#post-15941212) * Status: resolved