This error is because ConfigServer Security & Firewall (CSF) have shutdown their services and the author has retired so Juggernaut Firewall can no longer auto update the CSF script. This has been fixed in Juggernaut Firewall 5.01 which will be released on Sept 7, 2025. For now administrators can just disable the CSF auto update script using this command:
juggernaut --task=firewall:initial --AUTO_UPDATES=0 --restart=yes