Hangfire server stopped

I’m using .Net Core 2.0 with Hangfire 1.7.0-beta BackgroundJob.Enqueue to call in background process my function that will save the data to database and also RecurringJob.AddOrUpdate to call my function that will send bulk email. But suddenly the process stops. And when I check the logs on the server, it says “Hangfire Server stopped.” Please help me. Thanks in advance.