@Moderator I know what it means. During some days I'm frequently getting this error, while during some other days this error doesn't appear at all. The script is the same, the threads number is the same, the work the script is performing is always the same. Also, we're talking about like 20 threads requesting a fingerprint every 5-10 minutes, so the limit can't be reached.
It looks to me it's more like an error on the fingerprint server during some days.