Hangfire creating jobs with NULL as Id

Everytime I create a job like:
BackgroundJob.Enqueue(() => Tasks.DownloadTransactions());

If fails with the following error:
Hangfire.BackgroundJobClientException: ‘Background job creation failed. See inner exception for details.’

SqlException: Cannot insert the value NULL into column ‘Id’, table ‘HangFire.Job’; column does not allow nulls. INSERT fails.

Did I set it up wrong somewhere?