The preview is not working for scrumdinger, part : building app data

Hello, I have an issue with the scrumdinger tutorial. I downloaded the "Updating app data" part to continue the tutorial, as I do with each section change. However, I'm facing a problem this time – the preview won't display, although the build is working fine. Do you have a solution? Thank you.

Cannot preview in this file Active scheme does not build this fle

Message : == PREVIEW UPDATE ERROR:

NoBuildableEntriesError: Active scheme does not build this file

Select a scheme that builds a target which contains the current file, or add this file to a target that is built by the current scheme

I closed Xcode twice and the problem was fixed

The preview is not working for scrumdinger, part : building app data
 
 
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