Same here. I'm suspecting the issue to be the missing 15.8 folder under /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport .
Unfortunately, could not find it anywhere else, including in more recent Xcode version (tried xCode 15.1-beta2, Xcode 15.0.1, and even xCode 14.3.1 from June this year)
vfc
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