Possible Isue with RedisPersistenceProvider.GetWorkflowInstance

[cubitus81]

Describe the bug raw variable, obtained from redis_HashGetAsync may not have data and JsonConvert will throw an exception.

Issue was found in the log showing that IndexConsumer.ProcessItem is throwing an error "Error indexing workfow - XXX- Value cannot be null. (Parameter 'value'). Note that ElasticSearch is not used, so the IndexConsumer will be using default ISearchIndex implementation

To Reproduce Steps to reproduce the behavior: It happens pretty often. Not sure on the steps to reproduce. Maybe the workflow has been removed when the IndexConsumer runs. Expected behavior It should not throw an exception when workflow cannot be found.

Additional context Add any other context about the problem here.