x2go: Connection failed, cannot create remote file

When I try to server with x2goclient, I get this error:

how can I fix it?

UPDATE: Both computers are on same local network with no firewalls, ssh connection between them works perfectly. Both computers are running Ubuntu 18.04, software versions: x2goserver 4.1.0.0-3 and x2goclient 4.1.1.1-2.

Solution 1:

This is a non-backward compatible change in libssh, which broke one of the corner cases in SCP protocol (aka CVE-2019-14889). This is already fixed in the x2goclient (it was already fixed for windows clients before) and now it is just matter of time to get this into your favorite distribution (preferrably through bug report in their bug tracker https://bugs.launchpad.net/):

Also you can use a nightly builds repo https://launchpad.net/~x2go/+archive/ubuntu/ppa There is a fixed x2goclient with version 4.1.2.2-0~1884~ubuntu available and it`s working.