Watch App not installing on enterprise archive

I have an enterprise app that has a companion watch app. Been working fine for several years. However as of IOS 15 beta and Watch OS 8 beta, I can do a build and run from Xcode and it will install and run normally. But if I archive the app and distribute it to local testers, the watch app will nit install with this error

0x16b58b000 -[ACXInstallQueue _onQueue_deQueueNextOperation]_block_invoke_2: Failed to install app com.***.watchkitapp (p = N, ui = Y) : Error Domain=ACXErrorDomain Code=17 "Got error 17 in install done from remote side (MI error ApplicationVerificationFailed ; Extended 0xe8008029 ; Desc Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.bwHmvb/extracted/Payload/***.app : 0xe8008029 (The code signature version is no longer supported.))" UserInfo={SourceFileLine=646, NSLocalizedDescription=Got error 17 in install done from remote side (MI error ApplicationVerificationFailed ; Extended 0xe8008029 ; Desc Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.bwHmvb/extracted/Payload/***.app : 0xe8008029 (The code signature version is no longer supported.)), FunctionName=-[ACXServerInstallOperation receivedDictionaryOrData:]}

We use Xcode managed profiles on this one so Im a bit confused. There are no embedded external libraries in the watch app. We are using coco pods.

SO what might be different between a debug and release that might be causing this?

Same problem here

Same problem, on beta6.

I checked the signature format because this article might be related: https://developer.apple.com/documentation/xcode/using-the-latest-code-signature-format

But I got CodeDirectory v=20400.

Watch App not installing on enterprise archive
 
 
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