Email notifications are received daily: /etc/cron.daily/imunify360-firewall exited with return code 127

Symptoms

• Email notifications are received daily:

  CONFIG_TEXT: run-parts: /etc/cron.daily/imunify360-firewall exited with return code 127

  CONFIG_TEXT: Cron root@example.com /usr/bin/flock -n /var/run/shrinker.lock /opt/alt/python35/bin/python3 /opt/alt/modsec-sdbm-util/bin/shrinker.py > /dev/null
  flock: failed to execute /opt/alt/python35/bin/python3: No such file or directory

• Imunify360 is not installed: the extension does not appear in Plesk > Extensions > My Extensions.

Cause

The daily task from previously installed Imunify360 was not removed.

Resolution

1. Connect to the Plesk server via SSH.

2. Remove the Imunify360 cron task:

   • on CentOS/RHEL-based distributions

     # rm -f /etc/cron.daily/imunify360-firewall

   • on Debian/Ubuntu-based distributions

     # apt-get purge imunify360*