Failed to Connecting Generic Remote Linux Devices

[tovax]

Hi, all!
I have an embedded Linux board and have successfully ported OpenSSH.There is no problem in testing ssh and scp instructions on Ubuntu hosts. I want to connect generic Linux devices to the development PC to run from Qt Creator, but failed.

I have tested this SSH instruction in Ubuntu terminal and it can be executed correctly.

Q1: Since SSH has no errors, why does it fail to exit in QT creator?
Q2: I found that askpass calls /usr/bin/ssh-askpass, but QT creator has specified that askpass is /opt/qt5.12.9/tools/qtcreator/libexec/qtcreator/qtc-askpass. Why doesn't it work?

Best Regards!

[tovax]

Edit sshd_ config configuration file, enable SFTP service.

vi /usr/local/etc/sshd_config