Try to add the Check App State activity instead of using Ifs. It will basically check if an element exists within a particular timeframe that you set, otherwise it would skip it after the timeout.
Are you trying to check for any conditions??like the presence of elements?? If yes, then in classic designer you can use Element exists or in modern you can use ‘Check App state’ activity.
Then using that you will get a Boolean value as output. Put that in the if condition
It appears when there are more than one variable with the same name or if the ifs you create cannot take true or false values.
Try running it in debug. Share a screenshot of the area where it stands.If it doesn’t work at all, check the variables, it’s possible that a condition field is empty.