致命错误：未捕获错误：未定义常量“MB_OVERLOAD_STR在G” 在 /home/ogsweb/public_html/wp-在cludes/sodium_compat/src/Core/Util.php:915 堆栈跟踪：#0 /home/ogsweb/public_html/wp-在cludes/sodium_compat/src/Core/Util.php(757): ParagonIE_Sodium_Core_Util::isMbStr在gOverride() #1 /home/ogsweb/public_html/wp-在cludes/sodium_compat/src/Compat.php(2822): ParagonIE_Sodium_Core_Util::strlen('G"\x18\xC5\xEA\xCF\xE4\x18\x19\x03\x89Vd/\x96...') #2 /home/ogsweb/public_html/wp-content/plug在s/wordfence/lib/wfCentralAPI.php(304): ParagonIE_Sodium_Compat::crypto_sign_detached('9c956ebc1196f7b...', 'G"\x18\xC5\xEA\xCF\xE4\x18\x19\x03\x89Vd/\x96...') #3 /home/ogsweb/public_html/wp-content/plug在s/wordfence/lib/wfCentralAPI.php(253): wfCentralAuthenticatedAPIRequest->fetchToken() #4 /home/ogsweb/public_html/wp-content/plug在s/wordfence/lib/wfCentralAPI.php(51): wfCentralAuthenticatedAPIRequest->getToken() #5 /home/ogsweb/public_html/wp-content/plug在s/wordfence/lib/wfCentralAPI.php(559): wfCentralAPIRequest->execute() #6 /home/ogsweb/public_html/wp-在cludes/class-wp-hook.php(287): wfCentral::sendSecurityEvent('adm在Log在NewLo...', Array, Array) #7 /home/ogsweb/public_html/wp-在cludes/class-wp-hook.php(311): WP_Hook->apply_filters('', 数组) #8 /home/ogsweb/public_html/wp-在cludes/plug在.php(478): WP_Hook->do_action（数组）#9 /home/ogsweb/public_html/wp-content/plug在s/wordfence/lib/wordfenceClass.php(2501): do_action('wordfence_secur...', 'adm在Log在NewLo...', Array, Array) #10 /home/ogsweb/public_html/wp-在cludes/class-wp-hook.php(289): wordfence::log在Action('Adm在_BIT2') #11 /home/ogsweb/public_html/wp-在cludes/class-wp-hook.php(311): WP_Hook->apply_filters('', 数组) #12 /home/ogsweb/public_html/wp-在cludes/plug在.php(478): WP_Hook->do_action（数组）#13 /home/ogsweb/public_html/wp-在cludes/user.php(110): do_action('wp_log在', 'Adm在_BIT2', Object(WP_User)) #14 /home/ogsweb/public_html/wp-log在.php(1248): wp_signon(Array, true) #15 {ma在} thrown 在 /home/ogsweb/public_html/wp-在cludes/sodium_compat/src/Core/Util.php on l在e 915
关于提交拉取请求报告错误 向后不兼容的更改（搜索“MB_OVERLOAD_STRING”时，您会发现：
这意味着您的服务器确实从 PHP 7.4 升级到 8.0 ，并从那时起抛出错误？