Getting the same issue with Xcode 14 beta 2. The same view works in SwiftUI Previews without any problems in Xcode 13.
jamesaddyman
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@Ben, I didn't see your reply before posting my own... the /universal/ was what I was missing -- I'll give it a try, thanks!
I'm sorry, I don't have a solution for you, only a "me too" post... but with a slightly different error.
Updating macOS on Big Sur isn't working for me either.
james@Jamess-Mac ~ % softwareupdate -i "macOS Big Sur Beta 9-20A5384c"
Software Update Tool
Finding available software
2020-10-01 09:28:22.990 softwareupdate[3891:516909] Creating client/daemon connection: FC1D1CA5-E086-474D-A4A9-4BE8EF30AC61
Downloading macOS Big Sur Beta 9
downloading: 100.00%
Failed to download & prepare update: Error Domain=SUMacControllerError Code=7721 "[SUMacControllerErrorPreflightWakeupFailed=7721] Failed to perform PreflightWakeup operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_INTERNAL_ERROR(7)]" UserInfo={NSUnderlyingError=0x149606b30 {Error Domain=MobileSoftwareUpdateErrorDomain Code=7 "No service connection" UserInfo={NSLocalizedDescription=No service connection}}, SUMacControllerErrorIndicationsMask=0, NSDebugDescription=[SUMacControllerErrorPreflightWakeupFailed=7721] Failed to perform PreflightWakeup operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_INTERNAL_ERROR(7)], NSLocalizedDescription=Failed to launch the software update installer. Please try again.}
I noticed that the beta profile was not installed at first so I installed it and then the latest beta (beta 9, at time of writing) showed up in Software Update, but I can't install it.