I started receiving this error immediately after using the command /ar set (player) 0, after which, the time would no longer update. I've included the console error, the config I am using, as well as the text from the debugger below. I have already tried removing AutoRank, and re-installing it on the server.

Console Error:
https://pastebin.com/B5quAknp

Advanced Config:
https://pastebin.com/1n1nQKQy

Debugger:
https://pastebin.com/QVqFg8Rf

EDIT
I apologize, I didn't realize I was using an old version of Autorank. I re-downloaded the jar from spigot, and it is now working fine.