Hey @Qootaro,

 That message pop-ups when you have the ‘go to step 24’ command in your ' Step end' section in one of your other steps.

For example:

 ‘Step end’ of step no.1

When I’m trying to disable step no.2

To solve it, remove the ‘go to step’ command.

yes, @Eli_Shteinberg  is correct. either a go to step at the “end of step” action (instead of continue wizard) or in an advanced command in one of the steps