As we notice there is a bug on the apache config causing error to all Directadmin server or vps running on Apache.
To fix this issue, please guide the guide below.
First, you need to access to your Server via SSH to do it.
/usr/local/directadmin/directadmin p
cd /usr/local/directadmin/custombuild
./build rewrite_confs
./build update
./build apache
This issue have been discuss at Apache's failing because of FollowSymlinks in 2.4.48 | DirectAdmin Forums