Load failed. Object reference not set to an instance of an object.

Question

Load failed. Object reference not set to an instance of an object.

XBeg9 opened this issue a year ago · comments

Getting Load failed. Object reference not set to an instance of an object. error after selecting Task hub on Netherite backend deploy (used the "Deploy" button from the documentation).
Would appreciate any help around this problem

Fedir Skitsko · Answer 1 · Fri Jul 07 2023 05:11:07 GMT+0800 (China Standard Time)

I pulled out a little bit more info, so it fails inside DfmGetOrchestrationsFunction with such stack trace:

2023-07-06T20:33:06.803 [Error] DFM failed
System.NullReferenceException : Object reference not set to an instance of an object.
   at Microsoft.Azure.WebJobs.Extensions.DurableTask.AzureStorageDurabilityProviderFactory.GetAzureStorageOrchestrationServiceSettings(String connectionName,String taskHubNameOverride) at D:\a\_work\1\s\src\WebJobs.Extensions.DurableTask\AzureStorageDurabilityProviderFactory.cs : 177
   at Microsoft.Azure.WebJobs.Extensions.DurableTask.AzureStorageDurabilityProviderFactory.GetAzureStorageStorageProvider(DurableClientAttribute attribute) at D:\a\_work\1\s\src\WebJobs.Extensions.DurableTask\AzureStorageDurabilityProviderFactory.cs : 143
   at Microsoft.Azure.WebJobs.Extensions.DurableTask.ContextImplementations.DurableClientFactory.<>c__DisplayClass15_0.<CreateClient>b__0(DurableClientAttribute attr) at D:\a\_work\1\s\src\WebJobs.Extensions.DurableTask\ContextImplementations\DurableClientFactory.cs : 83
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key,Func`2 valueFactory)
   at async DurableFunctionsMonitor.DotNetBackend.HttpHandlerBase.<>c__DisplayClass2_0.<HandleAuthAndErrors>b__0(??)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async DurableFunctionsMonitor.DotNetBackend.Globals.HandleErrors(HttpRequest req,ILogger log,Func`1 todo)

Konstantin Lepeshenkov · Answer 2 · Fri Jul 07 2023 05:50:45 GMT+0800 (China Standard Time)

Hi @XBeg9 , did you use this button to deploy that instance or something else?

Because if yes, then that stack trace looks weird. It should be NetheriteStorageProvider, not AzureStorageDurabilityProvider...

Fedir Skitsko · Answer 3 · Fri Jul 07 2023 11:40:37 GMT+0800 (China Standard Time)

@scale-tone I found the issue, our event hub name was using snake-case which triggered that issue, renaming it to all lowercase, without dashes fixed the issue.