On WHM, phpMyAdmin was missing from left menu after Cpanel upgrade.
Verify cpanel-phpmyadmin package insalled on the server.
[root@server82 ~]# rpm -qa | grep phpmyadmin cpanel-phpmyadmin-4.8.3-6.cp1176.noarch [root@server82 ~]#
Since phpmyadmin package was installed, clear WHM cache with commands
/usr/local/cpanel/bin/refresh_plugins_cache /scripts/rebuild_whm_chrome
After clearning browser cahce, phpMyAdmin started showing in WHM.
