Why does this rule give a error?

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java.util.NoSuchElementException: Cannot pop() an empty List on line 6770 (method doRepeatR)

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Try changing to

If Hub 1 xxx Not Present THEN
Repeat every 6 mins
Delay 5 mins
If Hub 1 xxx Not Present THEN
Speak
Off
Delay 2 secs
On
END-REP
ELSE
Stop Repeating
Exit Rule
END-IF
END IF

Your repeat isn't actually defining what you want to repeat.

1 Like
3

Note also that you have no way out of your repeat, so it will keep going indefinitely (it might not really do anything if you have all the actions inside contained within a conditional action, but I suspect you just don't want it scheduled at all unless needed).

For various examples of repeats, I often refer people to this thread. The goal here is notifications, but that doesn't really matter--the important thing is how to get the repeat (and what stops it). In Rule 5.1, you have a few more options, notably "Repeat while (expession)," that might make this a bit easier, but the "old" ways will still work:

4

thanks