winscp error

Folks,

I have been trying to access some files from the box since we upgraded the code on F5 (14.1.0.6), can someone help me understand if it has to do with some settings on F5? if so, how can I fix this? Getting the below error -

Received too large (1936094320 B) SFTP packet. Max supported packet size is 1024000 B. The error is typically caused by message printed from startup script (like .profile). This message may start with "sftp". Cannot initialize SFTP protocol. Is the host running a SFTP server?

Thank you!