Cannot login - extensions.php & config.php never created

Hi

I am having a difficult time installing frontaccounting. After clearing red warnings on http://host/frontaccounting, I come to the login page with the following error messages:

- include_once(./installed_extensions.php): failed to open stream: No such file or directory in file: /var/www/html/frontaccounting/frontaccounting.php at line 23

- include_once(): Failed opening './installed_extensions.php' for inclusion (include_path='.:/usr/share/php') in file: /var/www/html/frontaccounting/frontaccounting.php at line 23

- Invalid argument supplied for foreach() in file: /var/www/html/frontaccounting/includes/session.inc at line 392

- session_start(): Cannot send session cache limiter - headers already sent (output started at /var/www/html/frontaccounting/config_db.php:1) in file: /var/www/html/frontaccounting/includes/session.inc at line 31

These error messages are followed by the login screen, specifying Version 2.4.7 Build 24.06.2019 - Login

Note, there is no company setup and hence none in the drop down.

None of the following files were created or exist on the entire computer:

- config.db
- installed_extensions.php

In order to advance this far, I had to create the following file:

/var/www/html/frontaccounting/config_db.php as

def_coy = 0; $tb_pref_counter = 1; $db_connections = array (
    0 => array ('name' => 'Training',
        'host' => 'localhost',
        'dbuser' => 'admin',
        'dbpassword' => '************',
        'dbname' => 'test',
        'tbpref' => '0_')
    );

Here are the details of my machine

- debian 9
- PHP 7.0.33-0+deb9u3
- mysql  Ver 8.0.16 for Linux on x86_64
- frontaccounting-2.4.7

I have set ownership of /var/www/html/frontaccounting and anything below this to www-data:www-data.

Permissions are 775.

I have tried without the "test" data base and with it. I created it using the mysql cli.

I have followed the instructions as best as I can.

I have never been able to get passed the login page.

Can you explain what I am missing?

Am I setting the ownership and permissions correctly?  ... to allow front accounting permissions without causing a security issue.

Are there some PHP or MySql setup tasks that I am neglecting?

Thanks,

Joe