Your First Swift 4 & iOS 11 App - Part 13: | Ray Wenderlich

Learn how to detect when the user moves the slider, and how to store the result in a variable. Along the way, you'll learn the basics of using Swift 4 strings.

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hi there, I am facing some issues with running the app, as an error pops up in the print section:

how do I solve this? when i run the app on my phone and i click “Hit Me”, the app refreshes and the above error is printed out.

Please help, thank you

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@flora_land Please let me know if you still have this issue when you get a chance. Thank you!