ARKit – Bug in Xcode 9 Beta 6

Question

This morning I have updated my Xcode 9 beta 1 to Xcode 9 beta 6. I'm working with ARKit and my application works fine on beta 1 but now, when I run my app I got this error:

//
//dyld: Symbol not found: _OBJC_CLASS_$_ARConfiguration
//Referenced from: /var/containers/Bundle/Application/5B74AF4C-011C-45B0-8BAD-DEF3DA7C0DFA/testARKit.app/testARKit
//Expected in: /System/Library/Frameworks/ARKit.framework/ARKit in /var/containers/Bundle/Application/5B74AF4C-011C-45B0-8BAD-DEF3DA7C0DFA/testARKit.app/testARKit
//

It's a SIGABRT on my thread 1

0 __abort_with_payload

-> 0x102ba1774 <+8>: b.lo 0x102ba178c <+32>

5 _dydl_start

-> 0x102b751e0 <+68>: mov x16, x0

Let me know how to fix this bug.

Answer 1

Clean your project: shift + option + cmd + k, then remove your derived data and rebuild project.

Answer 2

There is API change in beta version. Please update Xcode 9 (beta) to Xcode 9 and iOS 11 (beta) to iOS 11. It works for me.