Hi Frederik,

Perhaps a helpful starting point would be to add an additional key-value pair to your appsettings.json for 'ModelsBuilder.DebugLevel', with an int value greater than zero to enable detailed logging on the ModelsBuilder. Maybe that will shed a light on what's going wrong with the ModelsBuilder!

If nothing shows up, we'll have to continue looking for other solutions to found out what's going wrong!

Kind regards,

Corné Hoskam

I am experiencing this issue as well. I'm developing a site using Umbraco CMS v9.4.3 and my models builder configuration is:

"ModelsBuilder": {
    "ModelsMode": "SourceCodeManual",
    "ModelsNamespace": "MyProject.Models.PublishedContent",
    "ModelsDirectory": "~/Models/PublishedContent/Generated",
    "FlagOutOfDateModels": true,
    "DebugLevel": 1
  }

In the CMS --> Settings --> Models Builder tab I'm seeing this:

Models Builder
Version: 9.4.3+192eb2699ba4131addbb08236f60eb031707f751

ModelsBuilder is enabled, with the following configuration:

The models mode is 'SourceCodeManual'. Strongly typed models are generated on demand. Recompilation is necessary and models are available to all CSharp code.
Models namespace is MyProject.Models.PublishedContent.
Tracking of out-of-date models is not enabled.

I have not noticed any problems with the content of the generated models (so far), but the interface clearly doesn't represent my configuration properly.

I looked for logging in the Log Viewer but there's nothing there related to models builder.

Has there been any movement on this issue? I'm seeing the same issue on the latest version of Umbraco (9.5.1) and have been seeing it for several versions now.

Version: 9.5.1+406576ddfa7f3577d959a32ec2296bd9f730786e

ModelsBuilder is enabled, with the following configuration:

The models mode is 'SourceCodeManual'. Strongly typed models are generated on demand. Recompilation is necessary and models are available to all CSharp code.
Models namespace is Umbraco.Cms.Web.Common.PublishedModels.
Tracking of out-of-date models is not enabled.

And here's the appsettings:

  "ModelsBuilder": {
    "ModelsMode": "SourceCodeManual",
    "FlagOutOfDateModels": true,
    "Enable": true,
    "DebugLevel": 1
  },

We are using uSync which I know flags changes as well to models. Could it be possible that could be involved here? Is anyone else having this issue also utilizing uSync?

Have encountered this problem myself, in that ood.flag is not being created when in SourceCodeManual mode.

It was mentioned in a meetup tonight (https://www.meetup.com/umbracalong/) and a pull request has been raised as a potential fix for the problem... Suggest you follow: https://github.com/umbraco/Umbraco-CMS/pull/12548

Hi I'm also getting an error. It's driving me crazy as I can't figure out why this is happening. I'm using Umbraco version 11.1.0

Models Builder Version: 11.1.0+bad9148

ModelsBuilder is enabled, with the following configuration:

The models mode is 'SourceCodeAuto'. Strong typed models are generated on demand and anytime schema changes (i.e. Content Type) are made. Recompilation is necessary and models are available to all CSharp code.
Models namespace is Clo.ModelsGenerated.
Tracking of out-of-date models is not enabled.

Generate models Last generation failed with the following error:

Failed to build models.
Object reference not set to an instance of an object.

at Umbraco.Cms.Core.Models.PublishedContent.ModelType.MapToName(Type type, Dictionary`2 map, Boolean dictionaryIsInvariant)
at Umbraco.Cms.Core.Models.PublishedContent.ModelType.MapToName(Type type, Dictionary`2 map)
at Umbraco.Cms.Infrastructure.ModelsBuilder.Building.TypeModel.MapModelTypes(IList`1 typeModels, String ns)
at Umbraco.Cms.Infrastructure.ModelsBuilder.Building.Builder.Prepare()
at Umbraco.Cms.Infrastructure.ModelsBuilder.Building.Builder..ctor(ModelsBuilderSettings config, IList`1 typeModels)
at Umbraco.Cms.Infrastructure.ModelsBuilder.Building.TextBuilder..ctor(ModelsBuilderSettings config, IList`1 typeModels)
at Umbraco.Cms.Infrastructure.ModelsBuilder.Building.ModelsGenerator.GenerateModels()
at Umbraco.Cms.Web.BackOffice.ModelsBuilder.ModelsBuilderDashboardController.BuildModels()

Here's my appsettings:

  "ModelsBuilder": {
    "ModelsMode": "SourceCodeAuto",
    "ModelsNamespace": "Clo.ModelsGenerated",
    "FlagOutOfDateModels": true,
    "ModelsDirectory": "~/../Clo.ModelsGenerated/Generated",
    "AcceptUnsafeModelsDirectory": true,
    "DebugLevel": 1
  }

Here's what the logs say:

 Timestamp  2023-02-07T21:19:02.942863+00:00
@MessageTemplate    Failed to generate models.
SourceContext   Umbraco.Cms.Infrastructure.ModelsBuilder.AutoModelsNotificationHandler 
RequestId   4000007a-0004-ea00-b63f-84710c7967bb
RequestPath /umbraco/backoffice/umbracoapi/contenttype/PostSave
ProcessId   19028
ProcessName iisexpress
ThreadId    33
ApplicationId   bd148e2a10f91e11c7e83522b77dffcc762e7adb
MachineName LAPTOP-IMG4TNQN 
Log4NetLevel    ERROR
HttpRequestId   1fe15cc9-54a8-40d4-8853-432883665346
HttpRequestNumber   3 
HttpSessionId   0

Hi, I´m also experiencing an error using ModelsBuilder on Umbraco 11.2.0.

My appsettings as follow:

"ModelsBuilder": {
  "ModelsMode": "SourceCodeManual",
  "ModelsDirectory": "~/../MySite.Web.PublishedContentModels/Generated",
  "ModelsNamespace": "MySite.Web.PublishedContentModels.Generated",
  "AcceptUnsafeModelsDirectory": true,
  "FlagOutOfDateModels": true,
  "DebugLevel": 1
}

In Umbraco the ModelsBuilder dashboard is empty and no error in log either.

But in browser developer console there´s an error in angular.js saying

No url found for api name modelsBuilderBaseUrl <div ng-include="property.view" class="ng-scope">

is working on a reply...