500 error while executing step 10 #848

Error Log,
Can someone help me?

102610Keywords46670296ApplicationRD00155DE8529FApplication: Microsoft.Legal.MatterCenter.Jobs.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: Microsoft.Azure.KeyVault.KeyVaultClientException
at Microsoft.Azure.KeyVault.KeyVaultClient+<Do>d__11b1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].MoveNext() at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task) at Microsoft.Azure.KeyVault.KeyVaultClient+<GetSecretsAsync>d__f8.MoveNext() at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task) at System.Runtime.CompilerServices.TaskAwaiter1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].GetResult()
at Microsoft.Legal.MatterCenter.Jobs.KeyVaultHelper.retrieveSecrets(Boolean)
at Microsoft.Legal.MatterCenter.Jobs.KeyVaultHelper.GetKeyVaultSecretsCerticate()
at Microsoft.Legal.MatterCenter.Jobs.Program.Main(System.String[])