It's been several days the Abbyy API response have been having some issues. Our transcriptions process has stopped and keep waiting for the response from the Abbyy. The same response comes through when tried again. We couldn't easily pinpoint the exact error. We used strace and tcpdump to trace the issue. In one instance, the script stopped at one instance and it worked in the second attempt. Can you see if that's the issue at your end. I have attached the screenshots as well.
On the first attempt, the response stuck at the following and the script also got stuck waiting for the complete response.
And for the same page, on our second attempt, we get the full response and the script moved to the next page