Where is my Valid Architectures in Xcode12 beta4?

When I update my Xcode12 beta4,I connot run it.It will show me the error that 

Code Block 
No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=x86_64, VALID_ARCHS=arm64 armv7).

And then, I go to compare it to Xcode12 beta2, I find that my target has no 'Valid Architectures' option in beta4.

Then I go to see <Xcode 12 Beta 4 Release Notes>, it said:

'The stand-alone system assemblers for i386, x86_64, and arm are deprecated and may be removed in a future Xcode release. '

But I don't know how to fix that...

Has anyone solved the problem???



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Jacky_Shuo
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I saw it at the bottom of "Build Settings" in 'User-Defined', but it parameter is not changed, and my project still cannot run.

I also saw a new option in 'Architectures', it's 'Excluded Architectures', up to now I donnot know what it does.
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Jacky_Shuo
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Same issue i'm facing in Xcode12 release version, kindly suggest if you resolve the issue
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prasathpb
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