Create BackgroundJob getting error after upgrade hangfire to 1.8.6 version

I got an error for creating background job: “The transaction specified for TransactionScope has a different IsolationLevel than the value requested for the scope.\r\nParameter name: transactionOptions.IsolationLevel” after upgrading Hangfire to 1.8.6 version. Does anybody know how to fix it? Thanks!
Hangfire.BackgroundJob.Schedule(() => ScheduledSendEmail(ve), delayDays);