ISPConfig jobs stuck

Hello, i have a problem. For my sites i switch from Fast-CGI or php-fpm. After that i can not do any changes via ispconfig. For example create emails, sites etc. all my tasks is still in proces. What can i do? When i run script manually i get error

Code:

root@vm28069:~# /usr/local/ispconfig/server/server.sh
13.09.2021-11:37 - WARNING - There is already a lockfile set, but no process running with this pid (8753). Continuing.
PHP Fatal error:  Uncaught Error: Call to undefined function mysqli_init() in /usr/local/ispconfig/server/lib/classes/db_mysql.inc.php:83
Stack trace:
#0 /usr/local/ispconfig/server/lib/app.inc.php(51): db->__construct()
#1 /usr/local/ispconfig/server/lib/app.inc.php(241): app->__construct()
#2 /usr/local/ispconfig/server/server.php(51): require('...')
#3 {main}
  thrown in /usr/local/ispconfig/server/lib/classes/db_mysql.inc.php on line 83
PHP Fatal error:  Uncaught Error: Call to undefined function mysqli_init() in /usr/local/ispconfig/server/lib/classes/db_mysql.inc.php:83
Stack trace:
#0 /usr/local/ispconfig/server/lib/app.inc.php(51): db->__construct()
#1 /usr/local/ispconfig/server/lib/app.inc.php(241): app->__construct()
#2 /usr/local/ispconfig/security/check.php(32): require('...')
#3 {main}
  thrown in /usr/local/ispconfig/server/lib/classes/db_mysql.inc.php on line 83

 

With this i get

Code:

PHP 8.0.10 (cli) (built: Aug 26 2021 16:09:29) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.10, Copyright (c) Zend Technologies
    with Zend OPcache v8.0.10, Copyright (c), by Zend Technologies

but this version i dont use and have not installed

Now i tried to set to 5.6 with
sudo update-alternatives --set php /usr/bin/php5.6

Looks like that this help to me

 

Only use php version shipped with your OS, not higher or lower.