The Agenda constructor is asynchronous, and hence you can’t trigger a job without the agenda being started. You can’t run or schedule a job before agenda has built a connection with MongoDB and is ready.

By ready, I mean when the event ready is fired from agenda.

The following code would throw the error – TypeError: Cannot read property ‘findOneAndUpdate’ of undefined

 agenda.on('ready', () => {
        agenda.start();
 })
 agenda.every('1 minute', 'JOB_ONE');
 agenda.schedule('in 15 minutes', 'EMAIL_JOB')

Wrapping the every and schedule function calls inside the ready event will fix this error.

 agenda.on('ready', () => {
        agenda.start();
        agenda.every('1 minute', 'JOB_ONE');
        agenda.schedule('in 15 minutes', 'EMAIL_JOB')
 })