We have an app that schedules a nightly job to run updates. For some orgs, we keep seeing exceptions like these:

Developer script exception from {company name}. : '<unknown>' : Inactive User, orgId: {orgId} userId: {userId}

Apex script unhandled exception by user/organization: {userId}/{orgId}
 
Failed to process batch for class '<unknown>' for job id '707C000001g2yQT'

I'm not really sure what to do on the develper side to make these go away. Thanks in advance for any tips!