This error will come when the Ui element is not visible to the bot, You are using the Type into activity to enter the mail address in the Login of ACME, If yes the Ui element has to be appear on the foreground. If the Ui element not found in the foreground it will throw this exception.
For this, In Initallapplications you develop the code to login to website, before login use check app state activity to check the logout button is appears on the screen or not. If element appears do logout by click on logout. Then procced further for login process.
Check the below workflow image for better understanding.