致命错误，网站关闭并在下面抛出错误

Question

致命错误:未定义错误: /home/ogsweb/public_html/wp-includes/sodium_compat/src/Core/Util.php:915堆栈跟踪中未定义的常量"MB_OVERLOAD_STRING“：#0 /home/ogsweb/public_html/wp-includes/sodium_compat/src/Core/Util.php(757)：ParagonIE_Sodium_Core_Util::isMbStringOverride() #1 /home/ogsweb/public_html/wp-includes/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/plugins/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/plugins/wordfence/lib/wfCentralAPI.php(253)：wfCentralAuthenticatedAPIRequest->fetchToken() #4 /home/ogsweb/public_html/wp-content/plugins/wordfence/lib/wfCentralAPI.php(51)：wfCentralAuthenticatedAPIRequest->getToken() #5 /home/ogsweb/public_html/wp-content/plugins/wordfence/lib//home/ogsweb/public_html/wp-includes/class-wp-hook.php(287)：wfCentral::sendSecurityEvent('adminLoginNewLo...'，(559)：wfCentralAPIRequest->wfCentralAPI.php() #6 wfCentralAPI.php数组) #7 /home/ogsweb/public_html/wp-includes/class-wp-hook.php(311)：WP_Hook->apply_filters(''，Array) #8 /home/ogsweb/public_html/wp-includes/plugin.php(478)：WP_Hook->do_action(Array) #9 /home/ogsweb/public_html/wp-content/plugins/wordfence/lib/wordfenceClass.php(2501)：do_action(‘wordfence_secur.’，‘adminLoginNewLo.’，Array，数组) #10 /home/ogsweb/public_html/wp-includes/class-wp-hook.php(289)：wordfence::loginAction('Admin_BIT2') #11 /home/ogsweb/public_html/wp-includes/class-wp-hook.php(311)：WP_Hook->apply_filters(''，数组) #12 /home/ogsweb/public_html/wp-includes/plugin.php(478)：WP_Hook->do_action(Array) #13 /home/ogsweb/public_html/wp-includes/user.php(110)：do_action(‘wp_do_action’，‘Admin_BIT2 2’，Object(WP_User)) #14 /home/ogsweb/public_html/wp-login.php(1248)：wp_signon(Array，在第915行的/home/ogsweb/public_html/wp-includes/sodium_compat/src/Core/Util.php中抛出#15 {main}

Answer 1

在Submit a Pull Request Report a Bug Backward Incompatible Changes 上(当搜索"MB_OVERLOAD_STRING“时，您会发现：

mbstring.func_overload指令已被删除。相关的MB_OVERLOAD_MAIL、MB_OVERLOAD_STRING和MB_OVERLOAD_REGEX常量也已被删除。最后，删除了func_overload()中的"func_overload_list“和”mb_get_info“条目。

这意味着您的服务器确实从PHP7.4升级到8.0，并从那时起抛出了错误？