PHP Fatal Error: Uncaught Error

This is the Error that appears:

PHP Fatal error: Uncaught Error: Class 'Brizy_Admin_Serializable' not found in C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\editor\entity.php:3 Stack trace: #0 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\autoload.php(37): include_once() #1 [internal function]: brizyAutoload() #2 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\editor\project.php(8): spl_autoload_call() #3 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\autoload.php(37): include_once('C:\\inetpub\\vhos...') #4 [internal function]: brizyAutoload() #5 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\editor.php(86): spl_autoload_call() #6 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\editor.php(27): Brizy_Editor->__construct() #7 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\brizy.php(49): Brizy_Editor::get() #8 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs in C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\editor\entity.php on line 3 Fatal error: Uncaught Error: Class 'Brizy_Admin_Serializable' not found in C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\editor\entity.php:3 Stack trace: #0 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-content\plugins\brizy\autoload.php(37): include_once() #1 [internal function]: brizyAutoload() #2 C:\inetpub\vhosts\staging.cannaihealu.com\httpdocs\wp-

Updating Brizy 2.3.28 → 2.3.29

Brizy Pro already updated to 2.3.21

Please advise what to do.