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MAUI iOS app launch crashes #4205

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MAUI iOS app launch crashes#4205
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Description

@007vel
007vel
opened on May 20, 2025

Package

Sentry.Maui

.NET Flavor

.NET

.NET Version

MAUI 9+

OS

iOS

OS Version

No response

Development Environment

Visual Studio v17.x

SDK Version

5.6.0 and latest

Self-Hosted Sentry Version

No response

Workload Versions

My MAUI iOS app is crashing in launch in Simulator 18. MAUI 9,

System.Exception: Could not create an native instance of the type 'Sentry.CocoaSdk.SentryOptions': the native class hasn't been loaded.
It is possible to ignore this condition by setting ObjCRuntime.Class.ThrowOnInitFailure to false.
   at Foundation.NSObject.InitializeObject(Boolean alloced)
   at Foundation.NSObject..ctor(NSObjectFlag x)
   at Sentry.CocoaSdk.SentryOptions..ctor()
   at Sentry.SentrySdk.InitSentryCocoaSdk(SentryOptions options)
   at Sentry.SentrySdk.InitHub(SentryOptions options)
   at Sentry.SentrySdk.Init(SentryOptions options)
   at Sentry.Maui.Internal.SentryMauiInitializer.Initialize(IServiceProvider services)
   at Microsoft.Maui.Hosting.MauiAppBuilder.Build()
   at Sentry.reproduce.MauiProgram.CreateMauiApp() in /private/tmp/Sentry.reproduce/Sentry.reproduce/MauiProgram.cs:line 33
   at Sentry.reproduce.AppDelegate.CreateMauiApp() in /private/tmp/Sentry.reproduce/Sentry.reproduce/Platforms/MacCatalyst/AppDelegate.cs:line 8
   at Microsoft.Maui.MauiUIApplicationDelegate.WillFinishLaunching(UIApplication application, NSDictionary launchOptions)
   at UIKit.UIApplication.UIApplicationMain(Int32 argc, String[] argv, IntPtr principalClassName, IntPtr delegateClassName)
   at UIKit.UIApplication.Main(String[] args, Type principalClass, Type delegateClass)

I tried the suggested workaround, but it didn’t resolve the issue. In fact, adding the following snippet—as per the workaround—causes another library to break:

---> System.Globalization.CultureNotFoundException: Only the invariant culture is supported in globalization-invariant mode. See https://aka.ms/GlobalizationInvariantMode for more information. (Parameter 'name')


<PropertyGroup>
  <_LibXamarinLinkMode>static</_LibXamarinLinkMode>
  <_LibMonoLinkMode>static</_LibMonoLinkMode>
  <InvariantGlobalization>true</InvariantGlobalization>
</PropertyGroup>
<Target Name="_OverwriteReferencesLinkerFlags" BeforeTargets="_LinkNativeExecutable">
    <!-- Remove the `-u` prefix from `_ReferencesLinkerFlags` so we can give the output file to the platform linker -->
    <!-- NOTE: This step is actually also done after LinkNativeCode task, but we cannot intercept it differently -->
    <WriteLinesToFile SessionId="$(BuildSessionId)" File="$(_MtouchSymbolsList)" Lines="@(_ReferencesLinkerFlags->'%(Identity)'->Substring (2))" Overwrite="true" />

    <ItemGroup>
      <!-- Backup collected required symbols -->
      <_ReferencesLinkerFlagsBackup Include="@(_ReferencesLinkerFlags)" />

      <!-- Clear `_ReferencesLinkerFlags` to prevent required symbols to be passed in -u_symbolName format -->
      <_ReferencesLinkerFlags Remove="@(_ReferencesLinkerFlags)" />
      <!-- Instruct platform linker to only export required symbols -->
      <_ReferencesLinkerFlags Include="-exported_symbols_list" />
      <_ReferencesLinkerFlags Include="$(_MtouchSymbolsList)" />
    </ItemGroup>
  </Target>

  <Target Name="_RestoreReferencesLinkerFlags" AfterTargets="_LinkNativeExecutable">
    <ItemGroup>
      <_ReferencesLinkerFlags Remove="@(_ReferencesLinkerFlags)" />
      <_ReferencesLinkerFlags Include="@(_ReferencesLinkerFlagsBackup)" />
    </ItemGroup>
  </Target>

UseSentry or SentrySdk.Init call

  .UseSentry(options =>
              {
                  // The DSN is the only required setting.
                  options.Dsn = "aaaaabbbbb;

#if DEBUG
options.Debug = true;
#else
options.Debug = false;
#endif
options.SendDefaultPii = true;
options.AutoSessionTracking = true;
options.IsGlobalModeEnabled = true;
options.AttachStacktrace = true;
options.AttachScreenshot = true;
options.CaptureFailedRequests = true;

              })

Steps to Reproduce

Include Sentry nuget and just compile the app
app launch getting crashed

Expected Result

the app should not crash

Actual Result

app crash as below stacktrace

Activity

  1. github-project-automation
    added this to GDXon May 20, 2025
  2. getsantry
    added
    Waiting for: Product Owner
    on May 20, 2025
  3. getsantry
    added this to GitHub Issues with 👀 3on May 20, 2025
  4. getsantry
    moved this to Waiting for: Product Owner in GitHub Issues with 👀 3on May 20, 2025

  5. jamescrosswell commented on May 21, 2025

    @jamescrosswell
    jamescrosswell
    on May 21, 2025
    Collaborator

    @007vel I think this is related to broken bindings. This should be fixed in #4202 (which is included in the 5.8.0 release... hopefully that will be available within 12-24 hours).

    If you need to correct this urgently, you'll need to revert to version 5.5.1.

  6. getsantry
    removed
    Waiting for: Product Owner
    on May 21, 2025
  7. getsantry
    moved this from Waiting for: Product Owner to No status in GitHub Issues with 👀 3on May 21, 2025

  8. jamescrosswell commented on May 21, 2025

    @jamescrosswell
    jamescrosswell
    on May 21, 2025
    Collaborator

    @007vel just following up to say that we just shipped version 5.8.0 which rolls back the broken iOS SDK:
    https://github.com/getsentry/sentry-dotnet/releases/tag/5.8.0

    If you can confirm that bumping to 5.8.0 resolves the issue, that would be much appreciated 🙏🏻

  9. 007vel commented on May 22, 2025

    @007vel
    007vel
    on May 22, 2025
    Author

    @jamescrosswell I've tried using version 5.8.0, but the issue still persists.

    The same code works fine on Simulator 17, but it breaks on Simulator 18 and above.

  10. getsantry
    added
    Waiting for: Product Owner
    on May 22, 2025
  11. getsantry
    moved this to Waiting for: Product Owner in GitHub Issues with 👀 3on May 22, 2025

  12. 007vel commented on May 23, 2025

    @007vel
    007vel
    on May 23, 2025
    Author

    Adding a console log

    dyld[5625]: Symbol not found: _OBJC_CLASS_$_SentryCrashExceptionApplication

	  Referenced from: <AEE2021D-52D1-3CE3-8FD5-1A217631D7C1> /private/var/containers/Bundle/Application/B8C8C799-7C72-4837-861B-64DF478C3E2B/SevenMobileMAUI.app/SevenMobileMAUI

	  Expected in:     <5C4DA776-C29E-3CFC-AC25-F78E1B2C8FF4> /private/var/containers/Bundle/Application/B8C8C799-7C72-4837-861B-64DF478C3E2B/SevenMobileMAUI.app/Frameworks/Sentry.framework/Sentry

	12:54:27  Acquired tunnel connection to device.

	12:54:27  Enabling developer disk image services.

	12:54:27  Acquired usage assertion.

	Launched application with io.**.mobile bundle identifier.

	Waiting for the application to terminate...

	App terminated due to signal 6.

xcrun devicectl -j /var/folders/cg/hn1byzl54fsf54wpptv2tfm80000gn/T/tmpIr2fIU.tmp device process launch --terminate-existing --device 00008110-000E481636C2401E --console io.**.mobile

dyld[5625]: Symbol not found: _OBJC_CLASS_$_SentryCrashExceptionApplication

  Referenced from: <AEE2021D-52D1-3CE3-8FD5-1A217631D7C1> /private/var/containers/Bundle/Application/B8C8C799-7C72-4837-861B-64DF478C3E2B/SevenMobileMAUI.app/SevenMobileMAUI

  Expected in:     <5C4DA776-C29E-3CFC-AC25-F78E1B2C8FF4> /private/var/containers/Bundle/Application/B8C8C799-7C72-4837-861B-64DF478C3E2B/SevenMobileMAUI.app/Frameworks/Sentry.framework/Sentry

12:54:27  Acquired tunnel connection to device.

12:54:27  Enabling developer disk image services.

12:54:27  Acquired usage assertion.

Launched application with io.***.mobile bundle identifier.

Waiting for the application to terminate...

App terminated due to signal 6.

error HE1045: Failed to execute 'devicectl': 'devicectl -j /var/folders/cg/hn1byzl54fsf54wpptv2tfm80000gn/T/tmpIr2fIU.tmp device process launch --terminate-existing --device 00008110-000E481636C2401E --console io.***.mobile' returned the exit code 1.

error HE1046: Additional output: xcrun devicectl -j /var/folders/cg/hn1byzl54fsf54wpptv2tfm80000gn/T/tmpIr2fIU.tmp device process launch --terminate-existing --device 00008110-000E481636C2401E --console io.**.mobile

error HE1046: Additional output: dyld[5625]: Symbol not found: _OBJC_CLASS_$_SentryCrashExceptionApplication

error HE1046: Additional output:   Referenced from: <AEE2021D-52D1-3CE3-8FD5-1A217631D7C1> /private/var/containers/Bundle/Application/B8C8C799-7C72-4837-861B-64DF478C3E2B/SevenMobileMAUI.app/SevenMobileMAUI

error HE1046: Additional output:   Expected in:     <5C4DA776-C29E-3CFC-AC25-F78E1B2C8FF4> /private/var/containers/Bundle/Application/B8C8C799-7C72-4837-861B-64DF478C3E2B/SevenMobileMAUI.app/Frameworks/Sentry.framework/Sentry

error HE1046: Additional output: 12:54:27  Acquired tunnel connection to device.

error HE1046: Additional output: 12:54:27  Enabling developer disk image services.

error HE1046: Additional output: 12:54:27  Acquired usage assertion.

error HE1046: Additional output: Launched application with io.**.mobile bundle identifier.

error HE1046: Additional output: Waiting for the application to terminate...

error HE1046: Additional output: App terminated due to signal 6.

  13. jamescrosswell commented on May 25, 2025

    @jamescrosswell
    jamescrosswell
    on May 25, 2025
    Collaborator

    @007vel I don't think that workaround is a good idea. Sentry needs to be able to load the Sentry.CocoaSdk.SentryOptions class.

    I'm not able to reproduce this however. If you're still seeing this after upgrading to version 5.8.0, would you be able to put together a minimal application that reproduces this behaviour and share it (e.g. as a GitHub repo)?

  14. getsantry
    removed
    Waiting for: Product Owner
    on May 25, 2025
  15. getsantry
    moved this from Waiting for: Product Owner to No status in GitHub Issues with 👀 3on May 25, 2025
  16. jamescrosswell
    added
    Needs Reproduction
    on May 25, 2025

  17. 007vel commented on May 30, 2025

    @007vel
    007vel
    on May 30, 2025
    Author

    There was an issue during my project startup — a delay in loading all static resources from App.xaml.
    I had initialized the SDK in App.xaml.cs instead of MauiProgram.

    After moving SentrySdk.Init() to the correct place, everything is working fine now.

  18. getsantry
    added
    Waiting for: Product Owner
    on May 30, 2025
  19. getsantry
    moved this to Waiting for: Product Owner in GitHub Issues with 👀 3on May 30, 2025
  20. jamescrosswell
    closed this as completedon May 30, 2025
  21. getsantry
    removed
    Waiting for: Product Owner
    on May 30, 2025
  22. github-project-automation
    moved this to Done in GDXon May 30, 2025
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