No error message is logged if upgrade unattended fails when CMS Hosting Debug is set to false

[nicklite]

Which Umbraco version are you using?

13.2.5 - > 13.9.2

Bug summary

We were upgrading the website from Umbraco version 13.2.5 to 13.9.2 using the default settings for "UpgradeUnattended".

Specifics

We were upgrading the website from Umbraco version 13.2.5 to 13.9.2 using the default settings for "UpgradeUnattended".

When the CMS has the following settings:

"Umbraco": { "CMS": { "Hosting": { "Debug": false } } } }

We dont see any errors if the upgrade fails. When Debug is set to true then we see the error:

Umbraco.Cms.Core.Exceptions.BootFailedException: Boot failed: Umbraco cannot run. See Umbraco's log file for more details.\n\n-> Umbraco.Cms.Core.Exceptions.BootFailedException: The migration plan does not support migrating from state "7e170195-cab7-48ca-98c7-bbcbd5cfda95".\n\n-> System.InvalidOperationException: The migration plan does not support migrating from state "7e170195-cab7-48ca-98c7-bbcbd5cfda95".\n at Umbraco.Cms.Infrastructure.Migrations.MigrationPlan.ThrowOnUnknownInitialState(String state)\r\n at Umbraco.Cms.Infrastructure.Migrations.MigrationPlanExecutor.RunMigrationPlan(MigrationPlan plan, String fromState)\r\n at Umbraco.Cms.Infrastructure.Migrations.MigrationPlanExecutor.ExecutePlan(MigrationPlan plan, String fromState)\r\n at Umbraco.Cms.Infrastructure.Migrations.Upgrade.Upgrader.Execute(IMigrationPlanExecutor migrationPlanExecutor, ICoreScopeProvider scopeProvider, IKeyValueService keyValueService)\r\n at Umbraco.Cms.Infrastructure.Install.PackageMigrationRunner.RunPackagePlans(IEnumerable`1 plansToRun)\r\n at Umbraco.Cms.Infrastructure.Install.UnattendedUpgrader.HandleAsync(RuntimeUnattendedUpgradeNotification notification, CancellationToken cancellationToken)\r\n at Umbraco.Cms.Core.Exceptions.BootFailedException.Rethrow(BootFailedException bootFailedException)\r\n at Umbraco.Cms.Web.Common.Middleware.BootFailedMiddleware.InvokeAsync(HttpContext context, RequestDelegate next)\r\n at Microsoft.AspNetCore.Builder.UseMiddlewareExtensions.InterfaceMiddlewareBinder.<>c__DisplayClass2_0.<b__0>d.MoveNext()\r\n--- End of stack trace from previous location ---\r\n at SixLabors.ImageSharp.Web.Middleware.ImageSharpMiddleware.Invoke(HttpContext httpContext, Boolean retry)\r\n at Umbraco.Forms.Web.HttpModules.ProtectFormUploadRequestsMiddleware.InvokeAsync(HttpContext context, RequestDelegate next)\r\n at Microsoft.AspNetCore.Builder.UseMiddlewareExtensions.InterfaceMiddlewareBinder.<>c__DisplayClass2_0.<b__0>d.MoveNext()\r\n--- End of stack trace from previous location ---\r\n at Mindscape.Raygun4Net.AspNetCore.RaygunAspNetMiddleware.Invoke(HttpContext httpContext) in C:\buildAgent\work\75116afedfe31196\Mindscape.Raygun4Net.AspNetCore\RaygunAspNetMiddleware.cs:line 75\r\n at Mindscape.Raygun4Net.AspNetCore.RaygunAspNetMiddleware.Invoke(HttpContext httpContext) in C:\buildAgent\work\75116afedfe31196\Mindscape.Raygun4Net.AspNetCore\RaygunAspNetMiddleware.cs:line 86\r\n at NWebsec.AspNetCore.Middleware.Middleware.CspMiddleware.Invoke(HttpContext context)\r\n at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)\r\n at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)\r\n at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)\r\n at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)\r\n at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)\r\n at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddlewareImpl.HandleException(HttpContext context, ExceptionDispatchInfo edi)

Steps to reproduce

We were upgrading the website from Umbraco version 13.2.5 to 13.9.2 using the default settings for "UpgradeUnattended".

When the CMS has the following settings:

"Umbraco": { "CMS": { "Hosting": { "Debug": false } } } }

Expected result / actual result

Error message appears in Umbraco log regardless of debug mode or not

[github-actions]

Hi there @nicklite!

Firstly, a big thank you for raising this issue. Every piece of feedback we receive helps us to make Umbraco better.

We really appreciate your patience while we wait for our team to have a look at this but we wanted to let you know that we see this and share with you the plan for what comes next.

• We'll assess whether this issue relates to something that has already been fixed in a later version of the release that it has been raised for.
• If it's a bug, is it related to a release that we are actively supporting or is it related to a release that's in the end-of-life or security-only phase?
• We'll replicate the issue to ensure that the problem is as described.
• We'll decide whether the behavior is an issue or if the behavior is intended.

We wish we could work with everyone directly and assess your issue immediately but we're in the fortunate position of having lots of contributions to work with and only a few humans who are able to do it. We are making progress though and in the meantime, we will keep you in the loop and let you know when we have any questions.

Thanks, from your friendly Umbraco GitHub bot 🤖 🙂

[AndyButland]

I can't seem to replicate this one I'm afraid @nicklite. I've just put in some code to trigger the error, started up both with Debug set to true and false, and in both cases I see the exception details in the log file:

{"@t":"2025-07-30T10:54:57.6186007Z","@mt":"An unhandled exception has occurred while executing the request.","@l":"Error","@x":"Umbraco.Cms.Core.Exceptions.BootFailedException: Boot failed: Umbraco cannot run. See Umbraco's log file for more details.\n\n-> Umbraco.Cms.Core.Exceptions.BootFailedException: The migration plan does not support migrating from state...