Domain list domain ID instead of showing domain name

OS type and version CentOS Linux 7.9.2009
Webmin version 1.990
Virtualmin version 6.17
Related packages SUGGESTED

Suddenly domain list shows ID instead of the domain name. and I cannot remove and reinstall the domain name also. How to show again domain name instead of their ID again. Please help me.
Thanks in advance for helping me.

Hello @mahbuburriad and welcome to the community.

Have you seen Virtual Servers Changed to Numbers

Thanks. I have Virtualmin full backup, which creates daily. but how can i find /etc/webmin/virtual-server/domains this directory from the backup. I searched the backup file but did not get anything. How can I back up this directory next time specifically? Thanks