Is the sync task with FTP Pull Copy limited to 7998 files?

[Tirso Flores]

I am backup the content from a server on the internet to my TrueNAS using a Cloud Sync task with FTP PULL COPY credentials, and it actually does it well until it reaches a certain number of files: 7998 and indicates 100% complete. The log it sends is the following:


2021/03/15 14:44:32 INFO:
Transferred: 0/0 Bytes, -, 0 Bytes / s, ETA -
Elapsed time: 2.1s

2021/03/15 14:44:33 INFO:
Transferred: 0/0 Bytes, -, 0 Bytes / s, ETA -
Elapsed time: 3.1s

2021/03/15 14:44:33 INFO: There was nothing to transfer
2021/03/15 14:44:33 INFO:
Transferred: 0/0 Bytes, -, 0 Bytes / s, ETA -
Checks: 7998/7998, 100%
Elapsed time: 3.7s

The destination is a directory shared with AFP.

The reality is that there are more than 38,000 files in the directory, but it doesn't do any more transfers. Does anyone know what I must change to break that limit?
or is there something that I am not understanding well?

Thanks.