Session: Configured save path "{0}" is not writable by the PHP process.

安装完后登陆出现错误：

<?php defined('SYSTEMPATH') || exit('No direct script access allowed'); ?>

DEBUG - 2021-12-05 16:52:46 --> 引用文件不存在：D:\wwwroot\test/cache/config/domain_client.php---http://127.0.0.1:8021/admin.php?c=login

CRITICAL - 2021-12-05 16:52:46 --> Session: Configured save path "{0}" is not writable by the PHP process.

#SQL：

#URL：http://127.0.0.1:8021/admin.php?c=login

#AGENT：Mozilla/5.0 (Windows NT 6.3 WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.82 Safari/537.36

#REFERER：http://127.0.0.1:8021/index.php?c=install&amp;m=index&amp;step=4&amp;is_install_db=0&amp;protocol=http:

#0 D:\wwwroot\test\dayrui\System\Session\Handlers\FileHandler.php(102): CodeIgniter\Session\Exceptions\SessionException::forWriteProtectedSavePath('D:\\wwwroot\\test...')

#1 [internal function]: CodeIgniter\Session\Handlers\FileHandler->open('D:\\wwwroot\\test...', 'xunruicms_18b5d...')

#2 D:\wwwroot\test\dayrui\System\Session\Session.php(898): session_start()

#3 D:\wwwroot\test\dayrui\System\Session\Session.php(238): CodeIgniter\Session\Session->startSession()

#4 D:\wwwroot\test\dayrui\System\Config\Services.php(577): CodeIgniter\Session\Session->start()

#5 D:\wwwroot\test\dayrui\System\Config\BaseService.php(189): CodeIgniter\Config\Services::session(Object(Config\App), false)

#6 D:\wwwroot\test\dayrui\System\Config\Services.php(563): CodeIgniter\Config\BaseService::getSharedInstance('session', NULL)

#7 D:\wwwroot\test\dayrui\Fcms\Core\Phpcmf.php(447): CodeIgniter\Config\Services::session()

#8 D:\wwwroot\test\dayrui\Fcms\Core\Phpcmf.php(318): Phpcmf\Common->session()

#9 D:\wwwroot\test\dayrui\System\CodeIgniter.php(779): Phpcmf\Common->__construct()

#10 D:\wwwroot\test\dayrui\System\CodeIgniter.php(390): CodeIgniter\CodeIgniter->createController()

#11 D:\wwwroot\test\dayrui\System\CodeIgniter.php(317): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)

#12 D:\wwwroot\test\dayrui\Fcms\Init.php(458): CodeIgniter\CodeIgniter->run()

#13 D:\wwwroot\test\index.php(48): require('D:\\wwwroot\\test...')

#14 D:\wwwroot\test\admin.php(9): require('D:\\wwwroot\\test...')

#15 {main}