Dear Henry,
From what I see in the logs, it is actually the S2 L2A pre-processor (demmaccs using MAJA) that is not working and the reason seems that the input product was deleted from the disk or the archive of the product S2B_MSIL1C_20191002T034549_N0208_R104_T47PPR_20191002T081906 was corrupted.
Could you please check if you still have the product /mnt/archive/dwn_def/s2/default/nun1/S2B_MSIL1C_20191002T034549_N0208_R104_T47PPR_20191002T081906.zip on the disk? Or maybe somebody manually changed the name of the product in the database and now there is not a valid relation between what is in the database and what is on disk…
Best regards,
Cosmin