I'm importing a new set of MBOXs for appraisal. I initially tried to load MBOXs located in three directories into ePADD and received a No JSON Returned error (sshot attached). I wondered if it had to do with the aggregate size of the files, so I attempted an import using just one of the three directories (aggregate size ~ 1/2 of what I've managed to work with in ePADD before...around 340 MB). I received the same error message.
When I quit ePADD and restart, the appraisal module loads with the messages from the imported MBOX files as if no error had been encountered (also attached screenshot). I'm not sure what the error means, or how (or even if) it affects any processes I apply to the messages.
EDIT: Although upon restarting, ePADD appears to be functioning, you can see from the person entity screenshotthat it did not identify any person or place entities.