Copying files to remote side failed

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.7

Error message:
Copying files to remote side failed.

Out of memory

Stack trace:
[00D2CA0F]
[00D2CA0F]
[00D27EAB]
[0103D1FB]
[0108AD27]
[0108C9C3]
[0108A64E]
[01089D9F]
[01120505]
[00A0D26A]
[00A0DF18]
[00A0DF9F]
[00A0E0D7]
[00A32D8A]
[00D82740]
[00B6A2A1]

[011E0C49]
[011E2223]
[0108B6DB]
[0108C9C3]
[0108A64E]
[01089D9F]
[01120505]
[00A0D26A]
[00A0DF18]
[00A0DF9F]
[00A0E0D7]
[00A32D8A]
[00D82740]
[00B6A2A1]

[011E0C49]
[011E2223]
[0108A05F]
[01120505]
[00A0D26A]
[00A0DF18]
[00A0DF9F]
[00A0E0D7]
[00A32D8A]
[00D82740]
[00B6A2A1]

Thanks for your report.
I have sent you an email with a debug version of WinSCP to address you have used to register on this forum.