XCode 11.7 & 12 Plug-In Fatal Error

Code Block  % /Applications/Xcode-beta.app/Contents/MacOS/Xcode ; exit;
2020-10-11 18:59:08.680 Xcode[34078:994651] [MT] DVTPlugInLoading: Failed to load code for plug-in com.apple.dt.IDE.IDEiOSSupportCore (/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin), error = Error Domain=NSCocoaErrorDomain Code=3588 "dlopen(/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, 265): Library not loaded: /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice
 Referenced from: /Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore
 Reason: image not found" UserInfo={NSLocalizedFailureReason=The bundle couldn’t be loaded., NSLocalizedRecoverySuggestion=Try reinstalling the bundle., NSFilePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, NSDebugDescription=dlopen(/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, 265): Library not loaded: /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice
 Referenced from: /Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore
 Reason: image not found, NSBundlePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin, NSLocalizedDescription=The bundle “IDEiOSSupportCore” couldn’t be loaded.}, dyldError = dlopen(/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, 0): Library not loaded: /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice
 Referenced from: /Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore
 Reason: image not found
2020-10-11 18:59:08.682 Xcode[34078:994651] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-17518/IDEFoundation/Initialization/IDEInitialization.m:355
Details: Xcode failed its initial plug-in scan, error = Error Domain=DVTPlugInErrorDomain Code=2 "Loading a plug-in failed." UserInfo={DVTPlugInIdentifierErrorKey=com.apple.dt.IDE.IDEiOSSupportCore, DVTPlugInExecutablePathErrorKey=/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, NSLocalizedRecoverySuggestion=The plug-in or one of its prerequisite plug-ins may be missing or damaged and may need to be reinstalled., DVTPlugInDYLDErrorMessageErrorKey=dlopen(/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, 0): Library not loaded: /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice
 Referenced from: /Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore
 Reason: image not found, NSLocalizedDescription=Loading a plug-in failed., NSFilePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin, NSLocalizedFailureReason=The plug-in “com.apple.dt.IDE.IDEiOSSupportCore” at path “/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin” could not be loaded. The plug-in or one of its prerequisite plug-ins may be missing or damaged., NSUnderlyingError=0x7f85d00379c0 {Error Domain=NSCocoaErrorDomain Code=3588 "dlopen(/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, 265): Library not loaded: /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice
 Referenced from: /Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore
 Reason: image not found" UserInfo={NSLocalizedFailureReason=The bundle couldn’t be loaded., NSLocalizedRecoverySuggestion=Try reinstalling the bundle., NSFilePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, NSDebugDescription=dlopen(/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore, 265): Library not loaded: /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice
 Referenced from: /Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin/Contents/MacOS/IDEiOSSupportCore
 Reason: image not found, NSBundlePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEiOSSupportCore.ideplugin, NSLocalizedDescription=The bundle “IDEiOSSupportCore” couldn’t be loaded.}}}
Function: BOOL _IDEInitializePlugInManager(IDEInitializationOptions, NSError *__autoreleasing *)
Thread:  <NSThread: 0x7f85ce509270>{number = 1, name = main}
Please file a bug at https://feedbackassistant.apple.com with this warning message and any useful information you can provide.

Problem:
Xcode fails to launch with following alert:
"Loading a plug-in failed. -- The plug-in or one of its prerequisite plug-ins may be missing or damaged and may need to be reinstalled."

I found the key to a solution here:
https://developer.apple.com/forums/thread/100026

In the Xcode app directory:
/Applications/Xcode.app/Contents/Resources/Packages

there are four packages:
CoreTypes.pkg
MobileDevice.pkg
MobileDeviceDevelopment.pkg
XcodeSystemResources.pkg

I had to open and install all of these packages to fix the Xcode launch failure. Then Xcode opens normally.

How my Xcode was damaged: After a macOS update, I ran Xcode and it needed to update it's components. That failed because of low disk space (my bad) and then I was getting the "Loading a plug-in failed." alert upon failing Xcode launches.

Perhaps Xcode code resolve this issue automatically in the future?