使用 nxclient 连接 server 无法连接，查看 server 的日志有如下错误：
Jul 21 17:29:40 HJweb1 NXSERVER-3.5.0-11[23274]: User 'root' logged in from '124.66.102.134'. 'NXLogin::set'
Jul 21 17:29:42 HJweb1 NXSERVER-3.5.0-11[23274]: Selected node host:localhost with port:22 'main::selectNode'
Jul 21 17:29:42 HJweb1 NXSERVER-3.5.0-11[23274]: Current selected node: localhost is in status: running 'main::selectNode'
Jul 21 17:29:42 HJweb1 NXSERVER-3.5.0-11[23274]: Selected session type: unix-gnome allowed in the profile of user: haijiangzx 'NXShell::Static'
Jul 21 17:29:42 HJweb1 NXSERVER-3.5.0-11[23274]: ERROR: nxssh process exited with '255' 'NXNodeExec::exec'
Jul 21 17:29:44 HJweb1 NXNODE-3.5.0-9[23334]: WARNING: Overriding EnableUnencryptedSession with connection from localhost. ''
Jul 21 17:29:45 HJweb1 NXSERVER-3.5.0-11[23274]: Session 'EF3F809BDD41D87128AEECA19EE9D052' started by user 'haijiangzx'. 'NXShell::handler_session_start'
Jul 21 17:29:45 HJweb1 NXSERVER-3.5.0-11[23274]: ERROR: run command: no child process with pid 23317 Logger::log nxserver 3131
Jul 21 17:29:45 HJweb1 NXNODE-3.5.0-9[23334]: Using port '1097' on node 'HJweb1' for session 'unix-gnome'. Logger::log nxnode 6243
Jul 21 17:29:45 HJweb1 NXNODE-3.5.0-9[23334]: Using host from available host list: '118.126.10.131'. Logger::log nxnode 6244
Jul 21 17:29:46 HJweb1 NXSERVER-3.5.0-11[23274]: User 'root' from '124.66.102.134' logged out. 'NXLogin::reset'
Jul 21 17:29:55 HJweb1 NXSERVER-3.5.0-11[23274]: ERROR: nxssh process exit with exit status: 255 and flag connected set to: [0] 'NXShell::handler_bye'
Jul 21 17:29:55 HJweb1 NXSERVER-3.5.0-11[23274]: ERROR: Cannot establish ssh tunnel between nxserver and nxnode 'NXShell::handler_bye'
Jul 21 17:29:55 HJweb1 NXSERVER-3.5.0-11[23274]: ERROR: Please check permissions of user's home directory on the 'NXShell::handler_bye'
Jul 21 17:29:55 HJweb1 NXSERVER-3.5.0-11[23274]: ERROR: node host and file name for authorized keys set in the NX 'NXShell::handler_bye'
Jul 21 17:29:55 HJweb1 NXSERVER-3.5.0-11[23274]: ERROR: node and SSHD configurations. 'NXShell::handler_bye'
Jul 21 17:29:57 HJweb1 NXNODE-3.5.0-9[23334]: ERROR: run command: process: 23388 finished with: 1 Logger::log nxnode 3907
Jul 21 17:29:58 HJweb1 NXNODE-3.5.0-9[23398]: ERROR: Error when monitoring session: Could not create lock file in /tmp/.tX1097-lock 'NXSessionMonitor::__setSessionStatus'
Jul 21 17:29:58 HJweb1 NXNODE-3.5.0-9[23398]: Directory '/home/root/.nx/C-HJweb1-1097-EF3F809BDD41D87128AEECA19EE9D052' renamed into '/home/root/.nx/F-C-HJweb1-1097-EF3F809BDD41D87128AEECA19EE9D052' for further investigation Logger::log nxnode 6432
Jul 21 17:29:59 HJweb1 NXNODE-3.5.0-9[23334]: Session 'unix-gnome' on port '1097' failed. Logger::log nxnode 6513
Jul 21 17:30:05 HJweb1 NXSERVER-3.5.0-11[23391]: ERROR: NXNodeExec: Cannot kill nxssh process: No such process 'NXNodeExec::exec'
Jul 21 17:30:05 HJweb1 NXSERVER-3.5.0-11[23391]: User ’root‘ from '124.66.102.134' logged out. 'NXLogin::reset'
请问各位高手，如何解决此问题？