2023-10-10 16:17:01.16232614.0MbinfoCronjob execution started. PID: 112089
2023-10-10 16:17:01.19618814.0MbinfoMoved 3 transactions from fast queue to main queue: Document #2680000015, Document #2680000016, Document #2680000017
2023-10-10 16:17:01.19918314.0MbinfoThere are 7865 records in the RD queue.
2023-10-10 16:17:01.30821914.0MbcriticalCronjob execution stopped prematurely. Exception:The `initial currency` parameter of App\CurrencyExchange\Rates::convert is not valid (eer)
2023-10-10 16:17:01.32355914.0MbinfoCronjob execution ended.

A transaction has been started but never closed

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