cPanel, Lxadmin or Direct Admin – Roundcube issues

cPanel, Lxadmin or Direct Admin – Roundcube issues – SERVICE CURRENTLY NOT AVAILABLE! Error No. [500] / Error No. [0x01F4]

On cPanel, just update roundcube

/usr/local/cpanel/bin/update-roundcube --force

On Lxadmin, just re-install

rm /var/cache/lxadmin/lxwebmail*
lphp.exe ../bin/misc/installRoundCube.php
/script/upcp

On DirectAdmin

check logs   var/www/html/roundcube/logs/error

just deleted da_roundcube
and ./build roundcube

solved the problem