Codeigniter:会话:已配置的保存路径不是目录

I am trying to transfer my website to another server. I transferred all data files to another server and and I imported db files by phpMyAdmin correctly.

then I received error log as

[16-Jun-2018 12:21:52 UTC] PHP Warning: Uncaught Exception: Session: Configured save path '/kfive/sessions' is not a directory, doesn't exist or cannot be created. in /home/u620816326/public_html/system/libraries/Session/drivers/Session_files_driver.php:138

Stack trace: 0 [internal function]: CI_Session_files_driver->open('/kfive/sessions', 'ci_session')

1 /home/u620816326/public_html/system/libraries/Session/Session.php(143): session_start()

2 /home/u620816326/public_html/system/core/Loader.php(1285): CI_Session->__construct()

3 /home/u620816326/public_html/system/core/Loader.php(1178): CI_Loader->_ci_init_library('Session', 'CI_', NULL, 'session')

4 /home/u620816326/public_html/system/core/Loader.php(1043): CI_Loader->_ci_load_stock_library('Session', 'Session/', NULL, NULL)

5 /home/u620816326/public_html/system/core/Loader.php(1089): CI_Loader->_ci_load_library('Session', NULL, NULL)

6 /home/u620816326/public_html/system/core/Loader.php(218): CI_Loader->_ci_load_library('Session', NULL, NULL) 7 /home/u620816326/public_html/system/core/Lo in /home/u620816326/public_html/system/libraries/Session/drivers/Session_files_driver.php on line 138

[16-Jun-2018 12:21:52 UTC] PHP Fatal error: session_start(): Failed to initialize storage module: user (path: /kfive/sessions) in /home/u620816326/public_html/system/libraries/Session/Session.php on line 143

How can I fix this problem?

In your CI Project config appliaction/config/config.php there is a line

$config['sess_save_path'] = '/kfive/sessions'; 

This is where your session data gets saved and its an absolute path. So you need to create a directory like this with full rights to solve this issue.