iOS Payment SDK Sample app crashes on SPM

Questions
1

Hello,

I have downloaded the sample code from git and trying to run the Donut example. But gives error:
‘MockReaderUI’
‘SquareMobilePaymentsSDK’

so I tried to reset the package caches and add again the package but when I clicked on the add package Xcode crashed.

2

:waving_hand: I’m Square Dev AI, here to help answer your question!
Based on the information you’ve provided, the following documentation will help answer your question:

Additional Documentation

Configure the Reader SDK Sample Application
Configure the Reader SDK on iOS for Square Stand
Troubleshoot In-App Payments SDK Problems

If this documentation helped you find a solution, please check the box indicating that this reply solves the problem.
Otherwise one of our Developer Advocates will provide additional assistance shortly.

3

Do you have the full error message or the crash log? Also is this in production or sandbox? :slight_smile:

4

Hi Bryan,

Sure I am attaching the log file. I am trying to add SDK in the Donut example.

Screenshot 2025-05-08 at 9.54.24 AM
Screenshot 2025-05-08 at 9.54.24 AM2158×1198 253 KB

Log:

Translated Report (Full Report Below)

Process: Xcode [1590]
Path: /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier: com.apple.dt.Xcode
Version: 16.3 (23785)
Build Info: IDEApplication-23785000000000000~2 (16E140)
App Item ID: 497799835
App External ID: 873621200
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
User ID: 501

Date/Time: 2025-05-08 09:51:44.0786 -0700
OS Version: macOS 15.4.1 (24E263)
Report Version: 12
Anonymous UUID: 8BF781E9-7019-A742-C8DC-0485F5F831FF

Sleep/Wake UUID: 4B76AB70-99CE-433B-93A5-0B85FF574D45

Time Awake Since Boot: 10000 seconds
Time Since Wake: 1138 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000

Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6
Terminating Process: Xcode [1590]

Application Specific Information:
abort() called

Application Specific Signatures:
![requirement isEqual:[IDESourcePackageRequirement requirementUnversioned]]

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x196038388 __pthread_kill + 8
1 libsystem_pthread.dylib 0x19607188c pthread_kill + 296
2 libsystem_c.dylib 0x195f7ac60 abort + 124
3 IDEKit 0x1064d9740 +[IDEAssertionHandler _handleAssertionWithLogString:assertionSignature:assertionReason:extraBacktrace:] + 964
4 IDEKit 0x1064d9bb0 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] + 872
5 DVTFoundation 0x1024d695c _DVTAssertionHandler + 412
6 DVTFoundation 0x1024d6ac0 _DVTAssertionFailureHandler + 196
7 IDEFoundation 0x10b7cff14 -[IDESourcePackageReference initWithGitPackageRepositoryURL:requirement:].cold.1 + 60
8 IDEFoundation 0x10b029c30 -[IDESourcePackageReference initWithGitPackageRepositoryURL:requirement:] + 232
9 IDESwiftPackageUI 0x32ef2a9dc AvailablePackageOrigins.Origin.asSourcePackageReference(with:) + 264
10 IDESwiftPackageUI 0x32efbeb78 IDESwiftPackageChooseOptionsViewController.beginPreflight() + 364
11 IDESwiftPackageUI 0x32efbe9e4 IDESwiftPackageChooseOptionsViewController.viewDidAppear() + 368
12 IDESwiftPackageUI 0x32efbed18 @objc IDESwiftPackageChooseOptionsViewController.viewDidAppear() + 24
13 AppKit 0x199eaafe4 -[NSViewController _sendViewDidAppear] + 56
14 AppKit 0x19a8d753c -[NSView _windowDidOrderOnScreen] + 56
15 AppKit 0x19a8d75a8 -[NSView _windowDidOrderOnScreen] + 164
16 AppKit 0x19a8ed604 -[NSWindow _reallyDoOrderWindowAboveOrBelow:] + 1620
17 AppKit 0x19a8edf50 -[NSWindow _reallyDoOrderWindow:] + 64
18 AppKit 0x19a8ee1b0 -[NSWindow _doOrderWindow:] + 264
19 AppKit 0x199fd911c -[NSApplication _orderFrontModalWindow:relativeToWindow:] + 308
20 AppKit 0x19a01859c -[NSWindow _beginWindowBlockingModalSessionForSheet:service:completionHandler:isCritical:] + 1064
21 AppKit 0x19a6697e0 -[NSViewControllerSheetTransition animatePresentationOfViewController:fromViewController:] + 140
22 AppKit 0x19a4398cc -[NSViewController presentViewControllerAsSheet:] + 80
23 IDESwiftPackageUI 0x32efb07f0 IDESwiftPackageCollectionDetailViewController.addSelectedPackage() + 556
24 IDESwiftPackageUI 0x32efb048c <deduplicated_symbol> + 92
25 AppKit 0x199f4d040 -[NSApplication(NSResponder) sendAction:to:from:] + 560
26 IDEKit 0x1064d4030 __37-[IDEApplication sendAction:to:from:]_block_invoke + 272
27 DVTFoundation 0x1024d8560 DVTInvokeWithFailureHint + 76
28 IDEKit 0x1067ed358 -[IDEApplicationController application:setFailureHintMessage:duringBlock:] + 96
29 IDEKit 0x1064d4498 -[IDEApplication _invokeWithFailureHint:block:] + 92
30 IDEKit 0x1064d3eb0 -[IDEApplication sendAction:to:from:] + 284
31 AppKit 0x199f4cde0 -[NSControl sendAction:to:] + 72
32 AppKit 0x199f4cd24 __26-[NSCell _sendActionFrom:]_block_invoke + 100
33 AppKit 0x199f4cc4c -[NSCell _sendActionFrom:] + 204
34 AppKit 0x199f4cb48 -[NSButtonCell _sendActionFrom:] + 96
35 AppKit 0x199f4a0f4 NSControlTrackMouse + 1492
36 AppKit 0x199f49af4 -[NSCell trackMouse:inRect:ofView:untilMouseUp:] + 144
37 AppKit 0x199f4996c -[NSButtonCell trackMouse:inRect:ofView:untilMouseUp:] + 580
38 AppKit 0x199f48e18 -[NSControl mouseDown:] + 492
39 AppKit 0x199f47c74 -[NSWindow(NSEventRouting) _handleMouseDownEvent:isDelayedEvent:] + 3664
40 AppKit 0x199ed3ce0 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 492
41 AppKit 0x199ed392c -[NSWindow(NSEventRouting) sendEvent:] + 288
42 AppKit 0x19a74b094 -[NSApplication(NSEventRouting) sendEvent:] + 1504
43 IDEKit 0x1064d3ca8 -[IDEApplication sendEvent:] + 236
44 AppKit 0x19a34a4a4 -[NSApplication _handleEvent:] + 60
45 AppKit 0x199da0c8c -[NSApplication run] + 520
46 IDEKit 0x1064d3ab8 -[IDEApplication run] + 192
47 AppKit 0x199d7735c NSApplicationMain + 880
48 dyld 0x195cd2b4c start + 6000

Thread 1:
0 libsystem_kernel.dylib 0x19602fc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x196042308 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x196038764 mach_msg_overwrite + 484
3 libsystem_kernel.dylib 0x19602ffa8 mach_msg + 24
4 CoreFoundation 0x19615cf8c __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x19615b8a8 __CFRunLoopRun + 1208
6 CoreFoundation 0x19615ad68 CFRunLoopRunSpecific + 572
7 Foundation 0x197443c78 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
8 DTDeviceKitBase 0x1199f5930 +[DTDKRemoteDeviceConnection startServiceBrowsers] + 148
9 Foundation 0x19743dba8 NSThread__start + 732
10 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
11 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 2:
0 libsystem_kernel.dylib 0x19602fc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x196042308 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x196038764 mach_msg_overwrite + 484
3 libsystem_kernel.dylib 0x19602ffa8 mach_msg + 24
4 CoreFoundation 0x19615cf8c __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x19615b8a8 __CFRunLoopRun + 1208
6 CoreFoundation 0x19615ad68 CFRunLoopRunSpecific + 572
7 Foundation 0x197443c78 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
8 DTDeviceKitBase 0x1199fd45c -[DTDKRemoteDeviceDataListener listenerThreadImplementation] + 228
9 Foundation 0x19743dba8 NSThread__start + 732
10 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
11 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 3:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x19603ac2c __select + 8
1 CoreFoundation 0x196182e04 __CFSocketManager + 704
2 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
3 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 4:: com.apple.NSEventThread
0 libsystem_kernel.dylib 0x19602fc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x196042308 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x196038764 mach_msg_overwrite + 484
3 libsystem_kernel.dylib 0x19602ffa8 mach_msg + 24
4 CoreFoundation 0x19615cf8c __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x19615b8a8 __CFRunLoopRun + 1208
6 CoreFoundation 0x19615ad68 CFRunLoopRunSpecific + 572
7 AppKit 0x199ed1818 _NSEventThread + 140
8 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
9 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 5:: com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x19602fc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x196042308 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x196038764 mach_msg_overwrite + 484
3 libsystem_kernel.dylib 0x19602ffa8 mach_msg + 24
4 CoreFoundation 0x19615cf8c __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x19615b8a8 __CFRunLoopRun + 1208
6 CoreFoundation 0x19615ad68 CFRunLoopRunSpecific + 572
7 CFNetwork 0x19bb926a0 +[__CFN_CoreSchedulingSetRunnable _run:] + 416
8 Foundation 0x19743dba8 NSThread__start + 732
9 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
10 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 6:: Connection::RunLoop() packet reading thread
0 libsystem_kernel.dylib 0x1960307dc read + 8
1 LLDBRPC 0x11ca82054 rpc_common::RPCConnectionSocket::Read(std::__1::vector<unsigned char, std::__1::allocator>&, bool) + 140
2 LLDBRPC 0x11ca7d0c4 rpc_common::Connection::ReceivePacket(rpc_common::RPCPacket&) + 180
3 LLDBRPC 0x11ca7cf00 rpc_common::Connection::RunLoop() + 184
4 LLDBRPC 0x11ca81164 void* std::__1::__thread_proxy[abi:nn190102]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_deletestd::__1::__thread_struct>, rpc_common::Connection::AdoptUnixSocket(int)::$_0>>(void*) + 44
5 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
6 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 7:: IOReader::ReadThread() for fd 58
0 libsystem_kernel.dylib 0x19603ac2c __select + 8
1 LLDBRPC 0x11ca79a4c IOReader::ReadThread(std::__1::function<bool (void const*, unsigned long)>) + 380
2 LLDBRPC 0x11ca79e80 void* std::__1::__thread_proxy[abi:nn190102]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_deletestd::__1::__thread_struct>, IOReader::StartReadThread(std::__1::function<bool (void const*, unsigned long)>)::$_0>>(void*) + 136
3 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
4 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 8:
0 libsystem_kernel.dylib 0x196037204 __wait4 + 8
1 LLDBRPC 0x11ca7af7c PosixSpawn::ReapProcess(int, int*, int*) + 76
2 LLDBRPC 0x11ca815e4 void* std::__1::__thread_proxy[abi:nn190102]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_deletestd::__1::__thread_struct>, rpc_common::Connection::SpawnRPCServerProcess()::$_0>>(void*) + 64
3 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
4 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 9:: NIO-ELT-0-#0
0 libsystem_kernel.dylib 0x196035d04 kevent + 8
1 XCResultKit 0x101a12324 specialized static KQueue.kevent(kq:changelist:nchanges:eventlist:nevents:timeout:) + 56
2 XCResultKit 0x1019f70e8 specialized Optional.withUnsafeOptionalPointer(:slight_smile: + 152
3 XCResultKit 0x1019f154c specialized Selector.whenReady0(strategy:onLoopBegin::slight_smile: + 336
4 XCResultKit 0x1019eca80 SelectableEventLoop.run() + 592
5 XCResultKit 0x1019d2e2c specialized static MultiThreadedEventLoopGroup.runTheLoop(thread:parentGroup:canEventLoopBeShutdownIndividually:selectorFactory:initializer:_:slight_smile: + 280
6 XCResultKit 0x1019d0808 closure #1 in static MultiThreadedEventLoopGroup.setupThreadAndEventLoop(name:parentGroup:selectorFactory:initializer:) + 136
7 XCResultKit 0x1019d3ef4 partial apply for closure #1 in static MultiThreadedEventLoopGroup.setupThreadAndEventLoop(name:parentGroup:selectorFactory:initializer:) + 36
8 XCResultKit 0x1019d61f4 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) → () + 24
9 XCResultKit 0x101a131f4 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 348
10 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
11 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 10:
0 libsystem_pthread.dylib 0x19606cb6c start_wqthread + 0

Thread 11:
0 libsystem_kernel.dylib 0x19602fc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x196042308 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x196038764 mach_msg_overwrite + 484
3 libsystem_kernel.dylib 0x19602ffa8 mach_msg + 24
4 CoreFoundation 0x19615cf8c __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x19615b8a8 __CFRunLoopRun + 1208
6 CoreFoundation 0x19615ad68 CFRunLoopRunSpecific + 572
7 CoreFoundation 0x1961d4864 CFRunLoopRun + 64
8 SwiftPM 0x1687218bc closure #1 in FSEventStream.start() + 224
9 SwiftPM 0x1686f8c78 closure #1 in Thread.init(task:) + 108
10 SwiftPM 0x1680b2f64 <deduplicated_symbol> + 28
11 SwiftPM 0x1686f8de0 @objc ThreadImpl.main() + 44
12 Foundation 0x19743dba8 NSThread__start + 732
13 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
14 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 12:
0 libsystem_pthread.dylib 0x19606cb6c start_wqthread + 0

Thread 13:
0 libsystem_pthread.dylib 0x19606cb6c start_wqthread + 0

Thread 14:: JavaScriptCore libpas scavenger
0 libsystem_kernel.dylib 0x1960333cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x1960720e0 _pthread_cond_wait + 984
2 JavaScriptCore 0x1b60bc288 scavenger_thread_main + 1584
3 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
4 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 15:: WebCore: Scrolling
0 libsystem_kernel.dylib 0x19602fc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x196042308 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x196038764 mach_msg_overwrite + 484
3 libsystem_kernel.dylib 0x19602ffa8 mach_msg + 24
4 CoreFoundation 0x19615cf8c __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x19615b8a8 __CFRunLoopRun + 1208
6 CoreFoundation 0x19615ad68 CFRunLoopRunSpecific + 572
7 CoreFoundation 0x1961d4864 CFRunLoopRun + 64
8 JavaScriptCore 0x1b4ba4a08 WTF::Detail::CallableWrapper<WTF::RunLoop::create(WTF::ASCIILiteral, WTF::ThreadType, WTF::thread::QOS)::$_0, void>::call() + 52
9 JavaScriptCore 0x1b4bdbc08 WTF::thread::entryPoint(WTF::thread::NewThreadContext*) + 240
10 JavaScriptCore 0x1b49f2958 WTF::wtfThreadEntryPoint(void*) + 16
11 libsystem_pthread.dylib 0x196071c0c _pthread_start + 136
12 libsystem_pthread.dylib 0x19606cb80 thread_start + 8

Thread 16:
0 libsystem_pthread.dylib 0x19606cb6c start_wqthread + 0

Thread 17:
0 libsystem_pthread.dylib 0x19606cb6c start_wqthread + 0

Thread 18:
0 libsystem_pthread.dylib 0x19606cb6c start_wqthread + 0

Thread 19:
0 libsystem_pthread.dylib 0x19606cb6c start_wqthread + 0

Thread 0 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000000 x1: 0x0000000000000000 x2: 0x0000000000000000 x3: 0x0000000000000000
x4: 0x000000016f3cd0a0 x5: 0x0000000000000001 x6: 0x0000000000000079 x7: 0x000000000000000a
x8: 0x265faf39294e6872 x9: 0x265faf3b2dba24f2 x10: 0x000060001510ebab x11: 0x000000000000000f
x12: 0x000000000000000b x13: 0x0000600001e63ea0 x14: 0x0100000205411585 x15: 0x0000000205411580
x16: 0x0000000000000148 x17: 0x0000000205fb4ac0 x18: 0x0000000000000000 x19: 0x0000000000000006
x20: 0x0000000000000103 x21: 0x0000000204f44d60 x22: 0x0000000107209c30 x23: 0x0000000000000000
x24: 0x0000000000000000 x25: 0x0000000000000000 x26: 0x00006000036e0440 x27: 0x00006000023e59c0
x28: 0x0000000204f465c8 fp: 0x000000016f3cdb10 lr: 0x000000019607188c
sp: 0x000000016f3cdaf0 pc: 0x0000000196038388 cpsr: 0x40001000
far: 0x0000000000000000 esr: 0x56000080 Address size fault
5

The crash log shows this is specifically a Swift Package Manager (SPM) issue within Xcode itself. Here’s why:

  1. The crash occurred in Xcode’s internal components:
IDEFoundation [...] -[IDESourcePackageReference initWithGitPackageRepositoryURL:requirement:]
IDESwiftPackageUI [...] AvailablePackageOrigins.Origin.asSourcePackageReference
  1. It happened during the package management UI flow, specifically when trying to add or modify a Swift package dependency in Xcode’s package manager interface.
  2. The crash signature specifically mentions package requirements:
![requirement isEqual:[IDESourcePackageRequirement requirementUnversioned]]

This is an Xcode internal issue related to package management, not a crash due to the SDK.

Based on the crash log, this Xcode crash appears to be related to Swift Package Manager integration. Here’s the key information and analysis:

  1. Crash Location and Type:
Exception Type: EXC_CRASH (SIGABRT)
Application Specific Signatures:
![requirement isEqual:[IDESourcePackageRequirement requirementUnversioned]]
  1. Relevant Stack Trace:
7 IDEFoundation 0x10b7cff14 -[IDESourcePackageReference initWithGitPackageRepositoryURL:requirement:].cold.1 + 60
8 IDEFoundation 0x10b029c30 -[IDESourcePackageReference initWithGitPackageRepositoryURL:requirement:] + 232
9 IDESwiftPackageUI 0x32ef2a9dc AvailablePackageOrigins.Origin.asSourcePackageReference(with:) + 264
10 IDESwiftPackageUI 0x32efbeb78 IDESwiftPackageChooseOptionsViewController.beginPreflight() + 364
  1. Root Cause: The crash occurred while trying to add a Swift Package dependency. Specifically, it happened during the package requirement validation phase when the user was attempting to add or modify a package in the Swift Package Manager interface.
  2. Suggested Solutions:

a) Immediate Fixes:

  • Close Xcode completely
  • Clear derived data:
rm -rf ~/Library/Developer/Xcode/DerivedData
  • Clear Swift Package Manager cache:
rm -rf ~/Library/Caches/org.swift.swiftpm

b) If the issue persists:

  1. Try adding the package manually in the Package.swift file
  2. Remove the package completely and re-add it
  3. Check if the package URL is valid and accessible
  4. Verify the package is compatible with your Swift version

c) Prevention Steps:

  • Keep Xcode updated to the latest version
  • Ensure you have stable internet connection when adding packages
  • Verify package requirements before adding them
  • Consider using exact version requirements instead of branch or commit requirements
  1. Additional Troubleshooting:
  • Check if the issue is specific to one package or occurs with all packages
  • Verify your Git credentials are properly configured
  • Check if you can access the package repository in a browser
  • Try adding the package in a new project to isolate the issue
    :slight_smile:
6

I created a test project and added SDK via pod. Now it’s working.

But the Donut sample still crashes at SPM.

7

Are you getting any crash logs from the sample app? :slight_smile:

8

Hi Brayn,

Yes as I mentioned above. It seems to be a Xcode issue as you said.