Error accessing Usermin on port 20000

hello good afternoon everyone,

I came across an error today when accessing Usermin on port 20000

I’ve restarted the services but it didn’t work.

https://server:20000

The error below is displayed:
Error - Perl execution failed
Undefined subroutine &main::get_miniserv_config called at /usr/share/usermin/authentic-theme/session_login.cgi line 15.

Debian Linux 10
Webmin version 1981
Usermin version 1.812
Virtualmin version 6.14
Authentic theme version 19.83

Thank you all

Good morning,

Does anyone have any solution? I’m getting desperate.

Hugs.