Email error

Hello
I have a problem with plugin, when I send a ticket site informs me of an error like below, ticked is palaced but there is no any email information, server is on xampp

Fatal error: Uncaught ValueError: Unknown format specifier "S" in C:\xampp\htdocs\hurtchem\wp-content\plugins\kb-support\includes\emails\email-functions.php:353 Stack trace: #0 C:\xampp\htdocs\hurtchem\wp-content\plugins\kb-support\includes\emails\email-functions.php(353): sprintf('New %1Ss logged...', 'Ticket', 564) #1 C:\xampp\htdocs\hurtchem\wp-includes\class-wp-hook.php(303): kbs_admin_email_ticket_notice(564, Array</blockquote>) #2 C:\xampp\htdocs\hurtchem\wp-includes\class-wp-hook.php(327): WP_Hook->apply_filters('', Array) #3 C:\xampp\htdocs\hurtchem\wp-includes\plugin.php(470): WP_Hook->do_action(Array) #4 C:\xampp\htdocs\hurtchem\wp-content\plugins\kb-support\includes\emails\email-functions.php(147): do_action('kbs_admin_ticke...', 564, Array) #5 C:\xampp\htdocs\hurtchem\wp-content\plugins\kb-support\includes\emails\email-actions.php(46): kbs_email_ticket_received(564) #6 C:\xampp\htdocs\hurtchem\wp-includes\class-wp-hook.php(305): kbs_trigger_ticket_received(564) #7 C:\xampp\htdocs\hurtchem\wp-includes\class-wp-hook.php(327): WP_Hook->apply_filters('', Array) #8 C:\xampp\htdocs\hurtchem\wp-includes\plugin.php(470): WP_Hook->do_action(Array) #9 C:\xampp\htdocs\hurtchem\wp-content\plugins\kb-support\includes\admin\tickets\tickets.php(1106): do_action('kbs_save_ticket', 564, Object(WP_Post)) #10 C:\xampp\htdocs\hurtchem\wp-includes\class-wp-hook.php(303): kbs_ticket_post_save(564, Object(WP_Post), true) #11 C:\xampp\htdocs\hurtchem\wp-includes\class-wp-hook.php(327): WP_Hook->apply_filters('', Array) #12 C:\xampp\htdocs\hurtchem\wp-includes\plugin.php(470): WP_Hook->do_action(Array) #13 C:\xampp\htdocs\hurtchem\wp-includes\post.php(4457): do_action('save_post_kbs_t...', 564, Object(WP_Post), true) #14 C:\xampp\htdocs\hurtchem\wp-includes\post.php(4570): wp_insert_post(Array, false, true) #15 C:\xampp\htdocs\hurtchem\wp-admin\includes\post.php(423): wp_update_post(Array) #16 C:\xampp\htdocs\hurtchem\wp-admin\post.php(227): edit_post() #17 {main} thrown in C:\xampp\htdocs\hurtchem\wp-content\plugins\kb-support\includes\emails\email-functions.php on line 353

System info:

### Begin System Info ###

-- Site Info

Site URL:                 https://hurtchem.intranet:8080
Home URL:                 https://hurtchem.intranet:8080
Multisite:                No
Locale:                   pl_PL

-- WordPress Configuration

Version:                  5.8.2
Language:                 en_US
Permalink Structure:      /%year%/%monthnum%/%day%/%postname%/
Active Theme:             Screenr 1.2.4
Show On Front:            posts
ABSPATH:                  C:\xampp\htdocs\hurtchem/
Remote Post:              wp_remote_post() works
Table Prefix:             Length: 3   Status: Acceptable
WP_DEBUG:                 Disabled
Memory Limit:             40M
Registered Post Stati:    publish, future, draft, pending, private, trash, auto-draft, inherit, request-pending, request-confirmed, request-failed, request-completed, new, open, hold, closed

-- KBS Configuration

Installed:                4 stycznia 2022
First Version:            1.5.5
Current Version:          1.5.5
Upgraded From:            None

-- KBS Page Configuration

Submission Page:         https://hurtchem.intranet:8080/log-a-support-ticket/
Tickets Page:            https://hurtchem.intranet:8080/ticket-manager/

-- WordPress Active Plugins

Allow Multiple Accounts: 3.0.4
Booking Calendar: 8.9.2
KB Support: 1.5.5
Modern Events Calendar Lite: 6.2.0
nirweb support: 2.7.9
Notification: 8.0.9
Simple Iframe: 1.1.1
User Role Editor: 4.61
WPForms Lite: 1.7.1.2
WP Mail SMTP: 3.2.1

-- WordPress Inactive Plugins

Awesome Support: 6.0.10

-- Webserver Configuration

PHP Version:              8.0.13
MySQL Version:            5.5.5
Webserver Info:           Apache/2.4.51 (Win64) OpenSSL/1.1.1l PHP/8.0.13

-- PHP Configuration

Memory Limit:             512M
Upload Max Size:          40M
Post Max Size:            40M
Upload Max Filesize:      40M
Time Limit:               120
Max Input Vars:           1000
Display Errors:           On (1)

-- PHP Extensions

cURL:                     Supported
fsockopen:                Supported
SOAP Client:              Not Installed
Suhosin:                  Not Installed

### End System Info ###