Xcode 11 Beta 4 can't archive

Hi,

I've updated Xcode to the latest Beta 4, along with my device and app targeting iOS 13.

Ive set my command line tools to use XCode 11.0 (11M374r)

My App compiles and runs fine on my devices. However, when I attempt to archieve my application (I need to put it onto testflight), I get the following compiler errors:

ld: warning: Could not find or use auto-linked library 'swiftCoreGraphics'
ld: warning: Could not find or use auto-linked library 'swiftDarwin'
ld: warning: Could not find or use auto-linked library 'swiftUIKit'
ld: warning: Could not find or use auto-linked library 'swiftFoundation'
ld: warning: Could not find or use auto-linked library 'swiftsimd'
ld: warning: Could not find or use auto-linked library 'swiftMetal'
ld: warning: Could not find or use auto-linked library 'swiftObjectiveC'
ld: warning: Could not find or use auto-linked library 'swiftos'
ld: warning: Could not find or use auto-linked library 'swiftQuartzCore'
ld: warning: Could not find or use auto-linked library 'swiftCore'
ld: warning: Could not find or use auto-linked library 'swiftCoreImage'
ld: warning: Could not find or use auto-linked library 'swiftCoreAudio'
ld: warning: Could not find or use auto-linked library 'swiftDispatch'
ld: warning: Could not find or use auto-linked library 'swiftAVFoundation'
ld: warning: Could not find or use auto-linked library 'swiftCoreMedia'
ld: warning: Could not find or use auto-linked library 'swiftNetwork'
ld: warning: Could not find or use auto-linked library 'swiftCoreFoundation'
ld: warning: Could not find or use auto-linked library 'swiftCoreLocation'
Undefined symbols for architecture arm64:
  "type metadata accessor for (extension in Foundation):Swift.String.Encoding", referenced from:

Showing Recent Errors Only
Undefined symbol: type metadata accessor for (extension in Foundation):Swift.String.Encoding

Undefined symbol: type metadata accessor for Swift.Dictionary

Undefined symbol: type metadata for Foundation.Data

Undefined symbol: (extension in Foundation):Swift.String.init(data: __shared Foundation.Data, encoding: (extension in Foundation):Swift.String.Encoding) -> Swift.String?

Undefined symbol: Swift.KEY_TYPE_OF_DICTIONARY_VIOLATES_HASHABLE_REQUIREMENTS(Any.Type) -> Swift.Never

Undefined symbol: type metadata for Swift.Int32

Undefined symbol: static Swift._DictionaryStorage.resize(original: Swift.__RawDictionaryStorage, capacity: Swift.Int, move: Swift.Bool) -> Swift._DictionaryStorage<a, b="">

Undefined symbol: method descriptor for Swift.Error._getEmbeddedNSError() -> Swift.AnyObject?

Undefined symbol: method descriptor for Swift.Error._domain.getter : Swift.String

I apologise if this has been raised before, but I couldnt find within the forum, but any help or link to solution would be greatly appreciated.

Also would anyone know when more updates will be availble for iOS 13 to fix this potential issue?

Thanks in advance