Insufficient level of logging in ElasticSearch IndexingBackgroundTask

[AndreySurkov]

Describe the bug

I have an instance of OrchardCore with enabled ElasticSearch indexing and IndexingBackgroundTask.
Several times per day I see in logs following error

"message":"Error while processing background task '\"OrchardCore.Search.Elasticsearch.Core.Services.IndexingBackgroundTask\"' on tenant '\"Default\"'.",

"exception":"System.InvalidOperationException: Operation is not valid due to the current state of the object.
   at OrchardCore.Search.Elasticsearch.Core.Services.ElasticIndexManager.GetLastTaskId(String indexName)
   at OrchardCore.Search.Elasticsearch.Core.Services.ElasticIndexingService.ProcessContentItemsAsync(String indexName)
   at OrchardCore.Modules.ModularBackgroundService.<>c__DisplayClass11_2.<<RunAsync>b__1>d.MoveNext()",

"task_name":"OrchardCore.Search.Elasticsearch.Core.Services.IndexingBackgroundTask"

Of course it can be something with my instance of Elasticsearch but current level of logging does not allow to make some further investigation.

Orchard Core version

1.8.2

Expected behavior

I expect to see error details from ElasticSearch request.