I'm completely new to Omega.

I want to connect to my Omega2+ Firmware 0.3.4 b257 with Visual Studio Code under Windows 10.
Currently, I'm using WinSCP with Visual Studio Code as my editor, and that works fine.

The goal is only to use VSC and not to be dependant on WinSCP.

I can also connect to my Onion via SSH with Putty, but the Visual Studio Code Remote-SSH extension doesn't support connecting to a MIPS machine via SSH.
Therefore, I wanted to try out an SFTP connection.

Now I'm a bit confused about why I can't establish an FTP/SFTP connection to my Onion. I installed openssh-sftp-server - 9.6p1-1 on the Omega,
but every time I want to connect from Windows (i tried WinSCP, Visual Studio Code, Atom), I get the error:
"Received exit code 127 while establishing SFTP session."

logread only tells me:

authpriv.info dropbear[2632]: Child connection from xxxx::xxxx:xxxx:xxxx:xxxx%apcli0:xxxx
authpriv.notice dropbear[2632]: Password auth succeeded for 'root' from xxxx::xxxx:xxxx:xxxx:xxxx%apcli0:xxxx
authpriv.info dropbear[2629]: Exit (root): Disconnect received

Under /ur/bin, there is "sftp," but when I write it in the shell, I get this:

Error relocating /usr/bin/sftp: __utimes_time64: symbol not found
Error relocating /usr/bin/sftp: __clock_gettime64: symbol not found
Error relocating /usr/bin/sftp: reallocarray: symbol not found
Error relocating /usr/bin/sftp: __mktime64: symbol not found
Error relocating /usr/bin/sftp: __ppoll_time64: symbol not found
Error relocating /usr/bin/sftp: __timegm_time64: symbol not found
Error relocating /usr/bin/sftp: __time64: symbol not found
Error relocating /usr/bin/sftp: __localtime64_r: symbol not found
Error relocating /usr/bin/sftp: explicit_bzero: symbol not found
Error relocating /usr/bin/sftp: __stat_time64: symbol not found
Error relocating /usr/bin/sftp: __fstat_time64: symbol not found
Error relocating /usr/bin/sftp: __nanosleep_time64: symbol not found
Error relocating /usr/bin/sftp: __gettimeofday_time64: symbol not found
Error relocating /usr/bin/sftp: __localtime64: symbol not found
Error relocating /usr/bin/sftp: __lstat_time64: symbol not found

Something tells me that the "openssh-sftp-server - 9.6p1-1" may not be compatible with Firmware 0.3.4 b257. Or is it?

So, is there a way to connect to the onion with sftp?

Thanks!