CageFS reports "Unable to determine realpath"

Symptoms

PHP-FPM error logs may report the following entries:

/opt/cpanel/ea-php72/root/usr/var/log/php-fpm/error.log

[15-Jul-2020 10:35:53] WARNING: [pool domain_tld] child 84387 said into stderr: "ERROR: [pool domain_tld] CageFS jail error Unable to determine realpath of /home2/$cpanel_user (No such file or directory): No such file or directory (2)"

Description 

This problem may occur if you have a dedicated mount for your "/home" partition and the mounting task was performed after "lvectl" started. Thus CageFS is unable to locate the mount properly.

Workaround

To address this problem simply remount via CageFS and restart lvectl

cagefsctl --remount-all

systemctl restart lvectl