Cannot install apps with Softaculous

Everything seems to be working, but now I got this in /etc/apache2/error_log, after fresh installation:

PHP Notice: Array to string conversion in /usr/local/softaculous/enduser/main/functions.php on line 6501
PHP Notice: Undefined variable: database_user_id in /usr/local/softaculous/enduser/softpanel.php on line 567
PHP Fatal error: Uncaught SoapFault exception: [database_error] You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'AND 1' at line 1 DELETE FROM `web_database_user` WHERE database_user_id = AND 1 in /usr/local/softaculous/enduser/softpanel.php:567
Stack trace:
#0 /usr/local/softaculous/enduser/softpanel.php(567): SoapClient->__call('sites_database_...', Array)
#1 /usr/local/softaculous/enduser/main/software.php(1559): softpanel->deldb('asdasd', 'asdasd')
#2 /usr/local/softaculous/enduser/main/software.php(1217): deldb()
#3 /usr/local/softaculous/enduser/inc.php(319): software()
#4 /var/softwww/load.php(141): unknown()
#5 {main}
thrown in /usr/local/softaculous/enduser/softpanel.php on line 567
PHP Notice: Use of undefined constant LOGLEVEL_INFO - assumed 'LOGLEVEL_INFO' in /usr/local/ispconfig/interface/lib/classes/db_mysql.inc.php on line 484

Softacolous is showing:
Checking the submitted data(7 %)

Anyone can help?

 

Now, the same but Softaculous stopped at: Copying files and folders(95 %)

 

I set minimum passowrd lenght to 12, and Softaculous sets DB user passowrd to 10, so that was the problem!