Ios 10 core data issue

📚 Official Books iOS 10 by Tutorials
1

I am able to fetch core data entity in ios 9 but getting problem in ios 10. All other attributes are working fine in ios 10.

2

What error are you getting?

3

I changed the code
let request = NSFetchRequest(entityName:"Bowtie")
to
let request : NSFetchRequest<NSFetchRequestResult> = NSFetchRequest(entityName: "Bowtie")