SSH server is not working in new jenkins LTS 2.346.3


I am using SSH-server to run linux commands to a server but after the jenkins upgrade SSH-server is not working as it should be.
for info -
i am using java 1.8 in master
and SSH-server and SSH credetials all associated plugins are also upgraded

Can you guys please help me. in understanding what i am doing wrong or missing

Do you mean the ssh server embedded into Jenkins or your agent connection is SSH?