Undefined subroutine &miniserv::get_error_style called at ../web-lib-funcs.pl line 3853

Operating system: Centos
OS version: 7.x
Virtualmin: Latest version
RAM: 8 GB (60% used)
DISK: 15 GB + remaining

I’m receving email notification with
Subject: Cron <root@****> /etc/webmin/status/monitor.pl
Body: Undefined subroutine &miniserv::get_error_style called at …/web-lib-funcs.pl line 3853.

It’s happening from last week or from 2/3 days. I’m not sure, but it could be after updating Virtualmin to last version notified this week(±)

It’s causing my server down and all of my sites stop working for few minutes.

Please tell me what should I do.