Nearly every night at 23:59 I get error messages like this:

error [pimatic]: Error on evaluation of rule condition of rule kuche-shedule: undefined. 2019-04-29 23:59:19
error [pimatic]: rule kuche-shedule error executing an action: Invalid temperature supplied 23:59:19

I checked the data, but I can not find an invalid temperature. The rule which causes that error changes, sometimes 2 rules are listed, but the time is nearly the same (between 23:59:00 and 23:59:59) and it’s a chronoterm plugin rule every time