Hello,
Thank you for posting in Q&A forum.
To further troubleshoot this issue, please kindly try below steps:
1.Ensure that FTP user has proper permission to the directory assigned.
2.Check if FTP logging is enabled and configured correctly.
3.Ensure that FTP service is up to date which may avoid such kind of issue.
Meanwhile you can try to restart the FTP service.
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best regards,
Jill Zhou
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