Xcode immediately crashes after opening a new project - xcode

Question

$ 14:51:33 /Applications/Xcode.app/Contents/MacOS/Xcode
2020-04-05 14:51:44.095 Xcode[5709:184457] -[__NSCFNumber hasPrefix:]: unrecognized selector sent to instance 0xed1bd6c1b1e0a897
2020-04-05 14:51:44.099 Xcode[5709:184457] [MT] DVTAssertions: UNCAUGHT EXCEPTION (NSInvalidArgumentException): -[__NSCFNumber hasPrefix:]: unrecognized selector sent to instance 0xed1bd6c1b1e0a897
UserInfo: (null)
Hints:
0: Sending newProject: to IDEApplicationCommands from (null)
1: Sending openNewProjectAssistant: to IDEWelcomeWindowController from <IDEWelcomeWindowHighlightButton: 0x7fbc46da41b0>
2020-04-05 14:51:44.116 Xcode[5709:184457] [MT] DVTAssertions:
Backtrace:
0 __exceptionPreprocess (in CoreFoundation)
1 DVTFailureHintExceptionPreprocessor (in DVTFoundation)
2 objc_exception_throw (in libobjc.A.dylib)
3 -[NSObject(NSObject) __retain_OA] (in CoreFoundation)
4 ___forwarding___ (in CoreFoundation)
5 _CF_forwarding_prep_0 (in CoreFoundation)
6 __68-[IDEWorkspaceWindowController _purgeOldIdentifiersFromUserDefaults]_block_invoke_2 (in IDEKit)
7 __68-[IDEWorkspaceWindowController _purgeOldIdentifiersFromUserDefaults]_block_invoke (in IDEKit)
8 _dispatch_client_callout (in libdispatch.dylib)
9 _dispatch_once_callout (in libdispatch.dylib)
10 -[IDEWorkspaceWindowController _purgeOldIdentifiersFromUserDefaults] (in IDEKit)
11 -[IDEWorkspaceWindowController windowDidLoad] (in IDEKit)
12 -[NSWindowController _windowDidLoad] (in AppKit)
13 -[NSWindowController window] (in AppKit)
14 -[IDEDocumentController _openUntitledWorkspaceDocumentAndDisplay:simpleFilesFocused:forSingleFile:editorDocumentURLOrNil:error:] (in IDEKit)
15 -[IDEApplicationCommands newTemplateForTemplateKind:template:] (in IDEKit)
16 -[IDEApplicationCommands newProject:] (in IDEKit)
17 -[NSApplication(NSResponder) sendAction:to:from:] (in AppKit)
18 __37-[DVTApplication sendAction:to:from:]_block_invoke.86 (in DVTKit)
19 DVTInvokeWithFailureHint (in DVTFoundation)
20 -[DVTApplication sendAction:to:from:] (in DVTKit)
21 +[IDECommandManager sendActionForCommandWithIdentifier:from:] (in IDEKit)
22 -[NSApplication(NSResponder) sendAction:to:from:] (in AppKit)
23 __37-[DVTApplication sendAction:to:from:]_block_invoke.86 (in DVTKit)
24 DVTInvokeWithFailureHint (in DVTFoundation)
25 -[DVTApplication sendAction:to:from:] (in DVTKit)
26 -[NSControl sendAction:to:] (in AppKit)
27 __26-[NSCell _sendActionFrom:]_block_invoke (in AppKit)
28 -[NSCell _sendActionFrom:] (in AppKit)
29 -[NSButtonCell _sendActionFrom:] (in AppKit)
30 NSControlTrackMouse (in AppKit)
31 -[NSCell trackMouse:inRect:ofView:untilMouseUp:] (in AppKit)
32 -[NSButtonCell trackMouse:inRect:ofView:untilMouseUp:] (in AppKit)
33 -[NSControl mouseDown:] (in AppKit)
34 -[NSWindow(NSEventRouting) _handleMouseDownEvent:isDelayedEvent:] (in AppKit)
35 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] (in AppKit)
36 -[NSWindow(NSEventRouting) sendEvent:] (in AppKit)
37 -[NSApplication(NSEvent) sendEvent:] (in AppKit)
38 -[IDEApplication sendEvent:] (in IDEKit)
39 -[NSApplication run] (in AppKit)
40 NSApplicationMain (in AppKit)
41 main (in Xcode)
42 start (in libdyld.dylib)
Abort trap: 6
This is my first time installing XCode on my MacbookPro
I'm on macOS Catalin Version 10.15.4
What I tried
Installing different versions of Xcode: 11.4, 11.3, 10.1
sudo rm -rf /Library/Developer/CommandLineTools && xcode-select --install
sudo xcodebuild -license
Removing ~/Library/Caches
Removing /Library/Caches
Removing ~/Library/Developer
defaults delete com.apple.dt.xcode

Answer 1

Looks like maybe something is wrong with your defaults.
Try running the below command to clear them out
defaults delete com.apple.dt.xcode

Answer 2

Most likely somewhere in code, there is an assignment of an NSNumber variable to an NSString variable.
Thus number object (instance 0xed1bd6c1b1e0a897) cannot respond to hasPrefix: method.
2020-04-05 14:51:44.095 Xcode[5709:184457] -[__NSCFNumber hasPrefix:]: unrecognized selector sent to instance 0xed1bd6c1b1e0a897
Try to debug & figure out what actually this object is 0xed1bd6c1b1e0a897, where it's being created and assigned to string object.
Once you find it - you can easily convert it to NSString by using stringValue property.
I do presume you were able to build the project. If Xcode crashes even before build & run - I have no idea then.

Answer 3

Try deleting all these folders?
~/Library/Containers/com.apple.dt.BitbucketHostBuiltInExtension
~/Library/Containers/com.apple.dt.BitbucketServerHostBuiltInExtension
~/Library/Containers/com.apple.dt.GitHubEnterpriseHostBuiltInExtension
~/Library/Containers/com.apple.dt.GitHubHostBuiltInExtension
~/Library/Containers/com.apple.dt.GitLabHostBuiltInExtension
~/Library/Containers/com.apple.dt.GitLabSelfHostBuiltInExtension
~/Library/Containers/com.apple.dt.IDECacheDeleteAppExtension
~/Library/Containers/com.apple.dt.XCDocumenter.XCDocumenterExtension
~/Library/Containers/com.apple.dt.XcodeBuiltInExtensions
~/Library/Preferences/com.apple.dt.Instruments.plist
~/Library/Preferences/com.apple.dt.SKAgent.plist
~/Library/Preferences/com.apple.dt.Xcode.ITunesSoftwareService.plist
~/Library/Preferences/com.apple.dt.Xcode.LSSharedFileList.plist
~/Library/Preferences/com.apple.dt.Xcode.Playground.plist
~/Library/Preferences/com.apple.dt.Xcode.plist
~/Library/Preferences/com.apple.dt.xcodebuild.plist

Answer 4

Try deleting the DerivedData directory in ~/Library/Developer/Xcode
or
Try Uninstalling Xcode and then Reinstalling it