Storage issue unable to change quota no option coming

before it use to show me how much storage you wanted to allow for a specific website but now that option is not coming and even If I do anything on my website it says Out of disk space.

screenshot attached where it use to show me to change the quota

OS type and version REQUIRED
Webmin version REQUIRED
Virtualmin version REQUIRED
Related packages SUGGESTED

It helps everyone to have this to provide help as Failed to turn on quotas : quotaon: using //aquota.user on /dev/vda1 [/]: No such process quotaon: Quota format not supported in kernel. might be the problem