2025-10-14 12:27:20.89394018.0MbinfoCronjob execution started. PID: 305446
2025-10-14 12:27:20.90002818.0MbinfoCleanup: found 0 old emails to purge.
2025-10-14 12:27:20.91342818.0MberrorEncountered error while processing email [`id`: #23]: [error] Attachment file at index [0] was not found.(attachments)
2025-10-14 12:27:20.92763018.0MbcriticalCronjob execution stopped prematurely. Exception:The field 'readReceipt' doesn't exist in entity Entity\Email. Please check if this attribute is actually defined in the DB (it its a real attribute) or in the entity (if its a virtual attribute)
2025-10-14 12:27:20.93825118.0MbinfoCronjob execution ended.

A transaction has been started but never closed

Most likely another error was already logged in the server logs.