Error: cannot bind delete column

Hello all:

I have run across a show-stopping error, "cannot bind delete column" which renders Monet unusable until I restart the service. A batch import of events runs every 10 minutes and has been unable to complete for the last 28 hours because the service is not accepting commands. I'm not sure where to look for the source of this error. Restarting the service correct the issue, but this is a problem as the Monet instance drives live Tableau dashboards using this imported data.

Where do I need to start looking to track down the source of this error?

I am currently running 11.29.3 on CentOS 7.

Adam