Where did Checklists go?

[Eddie Du]

I remember creating checklists in my tasks last week, this week when I look at the tasks, I can't find the "Checklist" section anymore. Where did it go?

This is a HUGE deal as I put everything in checklists and this means I don't know what I should work on.

[Nic Brough -Adaptavist-]

Did you remove or disable the add-on?  Or the field(s) it uses?

Could another admin have done that?  Check that the add-on is available and enabled to start with.