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I am trying to install Sitecore Experience Commerce 9.0 Update-3 on my local machine, and the SIF installation stopped during the following step.

Importing Module => SitecoreUtilityTasks [GenerateCatalogTemplates : GenerateCatalogTemplates] Generating Catalog Templates ... Install-SitecoreConfiguration : Object reference not set to an instance of an object.

If I try to open my XP instance, I see the following error:

[NullReferenceException: Object reference not set to an instance of an object.] Sitecore.Commerce.Engine.Connect.DataProvider.CatalogRepository.GetEntityIdFromMappings(String sitecoreId) +100 Sitecore.Commerce.Engine.Connect.DataProvider.ReadOnlyCatalogDataProvider.GetItemDefinition(ID itemId, CallContext context) +177 Sitecore.Data.DataProviders.DataProvider.GetItemDefinition(ID itemID, CallContext context, DataProviderCollection providers) +146 Sitecore.Data.DataSource.GetItemInformation(ID itemID) +87 Sitecore.Data.DataSource.GetItemDefinition(ID itemID) +18 Sitecore.Data.Engines.TemplateEngine.LoadItemBasedTemplate(ID templateId) +40 Sitecore.Data.Engines.TemplateEngine.AddItemBasedTemplates(TemplateDictionary result) +196 Sitecore.Data.Engines.TemplateEngine.InternalGetTemplates() +492 Sitecore.Data.Engines.TemplateEngine.GetTemplate(ID templateId) +190 Sitecore.XA.Foundation.SitecoreExtensions.Extensions.d__0.MoveNext() +170

I have no idea of what is wrong.

Any help is appreciated.

Update 1

Looking into XP logs, I found the following issue:

1428 19:04:47 ERROR Authentication Error Exception: System.Exception Message: The certificate thumbprint is invalid or missing from your configuration, secure communication with the Commerce Engine is not possible.

ManagedPoolThread #9 19:04:47 ERROR An error occurred while loading mapping entries: System.NullReferenceException: Object reference not set to an instance of an object. at Sitecore.Commerce.Engine.Connect.DataProvider.CatalogRepository.LoadMappingEntries() Exception: System.NullReferenceException Message: Object reference not set to an instance of an object. Source: Sitecore.Commerce.Engine.Connect at Sitecore.Commerce.Engine.Connect.DataProvider.CatalogRepository.LoadMappingEntries()

The certificate's thumbprint in the App_config\Include\Y.Commerce.Engine\Sitecore.Commerce.Engine.Connect.config file looks correct.

enter image description here

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  • 1
    Stack traces and error messages need to be included as real text, please. Search engines won't decode your images.
    – Mark Cassidy ♦
    Commented Dec 16, 2018 at 21:21
  • 1
    Is there anything useful in your XP logs?
    – Rob Earlam
    Commented Dec 17, 2018 at 1:20
  • 1
    Please check the associated log file and update the question, if you find something relevant.
    – Arvind Gehlot
    Commented Dec 17, 2018 at 11:35
  • Thanks for the help and feedback. I have updated my original post with the requested information. I am not sure what I need to do here.
    – João Neto
    Commented Dec 18, 2018 at 18:14
  • @JoãoNeto I've also updated my answer below
    – Jonne Kats
    Commented Dec 19, 2018 at 9:32

2 Answers 2

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I've seen the exact same issue when XP couldn't connect with the commerce engine. If this is the case, you should see an error in the XP log files as Rob has indicated. Did you check these and did you check the engine connection settings in App_config\Include\Y.Commerce.Engine\Sitecore.Commerce.Engine.Connect.config?

Update: The thumbprint in Sitecore.Commerce.Engine.Connect.config needs to be the same as that configured in

  • CommerceAuthoring_Sc9\wwwroot\config.json
  • CommerceMinions_Sc9\wwwroot\config.json
  • CommerceOps_Sc9\wwwroot\config.json
  • CommerceShops_Sc9\wwwroot\config.json

(Under the Certificates -> Certificates element.) Also, make sure that the configured CertificateHeaderName is the same as the one configured in Sitecore.Commerce.Engine.Connect.config, in your case X-CommerceEngineCert.

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    Yeah that was my thought as well, smells a bit like an incorrect certificate thumbprint in the patch file
    – Rob Earlam
    Commented Dec 18, 2018 at 0:39
  • @jonne-kats, the thumbprint and certificate header name match in all configuration files. Looking into the CommerceAuthoring logs I saw the following error 00001 09:27:07 ERROR An error occurred while reading the key ring. System.IO.DirectoryNotFoundException: Could not find a part of the path 'c:\Encryption-Keys\'. I don't have drive C: in my machine, it is named X:. Can I simply update the config files or do I need to reinstall commerce again?
    – João Neto
    Commented Dec 21, 2018 at 8:42
  • @JoãoNeto Yes should be able to just modify the location in the wwwroot\config.json file. Make sure that the apppool user has permissions to write to the folder you specify.
    – Jonne Kats
    Commented Dec 21, 2018 at 11:38
  • @JonneKats which app's config.json file are you referring to?
    – Matthew Dresser
    Commented Aug 6, 2019 at 20:38
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In case someone is still having this issue, it could be related to sql credentials. You get the same issue in case sql policy is not correct on the commerce engine side.

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