Why is the Daloradius web interface not working?

Question

Apache HTTP Server

I have CentOS7, Apache?, PHP7.2, FreeRADIUS.
/daloradius/login.php is loaded in the browser, prompts for registration, I press "Login", after which a white page appears with an inscription in the upper left corner:
"Database connection error
Error Message: DB Error: extension not found"
In the Apache logs (/var /log/httpd/error_log), every time I try to log in it says:
[Thu May 16 09:54:22.500653 2019] [php7:warn] [pid 7381] [client 10.179.9.16:58902] PHP Warning: A non-numeric value encountered in /var/www/html/daloradius/lang/en.php on line 1406
[Thu May 16 09:54:22.500763 2019] [php7:warn] [pid 7381] [client 10.179.9.16:58902] PHP Warning : A non-numeric value encountered in /var/www/html/daloradius/lang/en.php on line 1407
[Thu May 16 09:54:22.500773 2019] [php7:warn] [pid 7381] [client 10.179.9.16:58902] PHP Warning: A non-numeric value encountered in /var/www/html/daloradius/lang/en .php on line 1408
[Thu May 16 09:54:22.500781 2019] [php7:warn] [pid 7381] [client 10.179.9.16:58902] PHP Warning: A non-numeric value encountered in /var/www/html/ daloradius/lang/en.php on line 1409

Answer 1

the error prompts that either the basis is not configured, or the service is not started.
check, in addition, the log clearly tells you which lines of error, open vim and look what's there.

Answer 2

In the end, the transition to Daloradius version 1.1.2 helped me
https://github.com/lirantal/daloradius/tree/v1.1-2