Workflow error. Unable to determine next processor. The job must be resubmitted.

Can anyone point to the reason for this error?

Workflow error. Unable to determine next processor. The job must be resubmitted.

ioerror; OffendingCommand: renderbands; Info: page 1

The DFE gets into state where this error blocks all submissions. Even the import option.

If we wait or restart the RIP daemon it works again sometimes. 

We submit all our jobs via JDF tickets. It seems to happen more when a lot of jobs are being submitted at the same time.

Error log

https://ibb.co/3vw03d6

 

Thank you!