2024-03-27 12:28:32.36684414.0MbinfoCronjob execution started. PID: 25103
2024-03-27 12:28:32.38767014.0MbinfoExporting invoice 2910000021:
2024-03-27 12:28:33.74473414.0MbsuccessInvoice 2910000021 was submitted, uuid: `6f753036dda154236356b6580a6bfca99e6d58de1a35efaad10f87d50120ce6f`.
2024-03-27 12:28:35.23818314.0MbcriticalCronjob execution stopped prematurely. App\Entity\Exception:[warning] Status has an invalid value. Status is 'submitted' and the new status cannot be 'rejected'(status)
2024-03-27 12:28:35.24855314.0MbinfoCronjob execution ended.

A transaction has been started but never closed

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