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Fatal error: Uncaught Error: Class 'WPMailSMTP\Core' not found in /ckz/wp-content/plugins/wp-mail-smtp/wp-mail-smtp.php:74 Stack trace: #0 /ckz/wp-content/plugins/wp-mail-smtp/wp-mail-smtp.php(80): wp_mail_smtp() #1 /ckz/wp-content/plugins/wp-mail-smtp/wp_mail_smtp.php(67): require_once('/ckz/wp-content...') #2 /ckz/wp-settings.php(322): include_once('/ckz/wp-content...') #3 /ckz/wp-config.php(89): require_once('/ckz/wp-setting...') #4 /ckz/wp-load.php(37): require_once('/ckz/wp-config....') #5 /ckz/wp-blog-header.php(13): require_once('/ckz/wp-load.ph...') #6 /ckz/index.php(17): require('/ckz/wp-blog-he...') #7 {main} thrown in /ckz/wp-content/plugins/wp-mail-smtp/wp-mail-smtp.php on line 74