Api batches stuck at "finalizing" after 24h

My batching requests have been stuck with the status ‘finalizing‘ for almost two days. No output file is created. I saw someone else posting similar issues and the reason for his case is the large output file size. The sizes of my input (~70M, 40000 requests) and output files (~33M) are not large, and I have successfully completed hundreds of them before. Wonder what’s going on here… Is there anyone with similar issues before/know what to do? Thanks in advance!

ps. I also noticed an increasing rate of unfinished batches (i.e. status=‘expired’ after 24h). Not sure if this is a common experience?

An update on this: Now all status finally turned into “expired“. This usually means unfinished requests exist (indeed, the metadata shows something like completed=39984, failed=0, total=40000), but when I check manually, I actually figured that all requests were finished! No error message, all status code=200, all [“content”] fileds in the right shape. This is so weird!