OpenSSL SSL_write: SSL_ERROR_SYSCALL when replicating the file to the remote ftp server

[arrenwu]

Recently I upgraded to the 13.8 [Donation Edition] and then started to see the following error

Cannot write file "<file_name>.ffs_tmp".

CURLE_SEND_ERROR: OpenSSL SSL_write: SSL_ERROR_SYSCALL, errno 0
150 Starting data transfer. [curl_easy_perform]


This error continues to block the program from replicating the data to the remote ftp server.

How can I resolve this issue?

[Zenju]

Looks like a libcurl bug: https://github.com/curl/curl/issues/15101

Here is a fixed version for testing: https://www.mediafire.com/file/e56rt0snrda9974/FreeFileSync_13.9_%255BBeta%255D_Windows_Setup.exe