'Waiting for data timed out, asking user what to do.'

The program stucked at 'strating the session'
The log file looks like:

. 2019-09-17 21:44:48.769 Wait for another 15 seconds?** ()
. 2019-09-17 21:44:49.818 Data has arrived, closing query to user.
. 2019-09-17 21:45:04.999 Waiting for data timed out, asking user what to do.
. 2019-09-17 21:45:04.999 Asking user:
. 2019-09-17 21:45:04.999 **Host is not communicating for 15 seconds.
. 2019-09-17 21:45:04.999


The local machine is windows 10 home, the remote machine is ubuntu 16.04 packed in docker.
How should I deal with this problem

Please attach a full session log file showing the problem (using the latest version of WinSCP).

. 2019-09-27 18:20:44.693 --------------------------------------------------------------------------
. 2019-09-27 18:20:44.693 WinSCP Version 5.15.4 (Build 9849) (OS 10.0.18362 - Windows 10 Home)
. 2019-09-27 18:20:44.693 Configuration: HKCU\Software\Martin Prikryl\WinSCP 2\
. 2019-09-27 18:20:44.693 Log level: Debug 2, Rotating after: 1M
. 2019-09-27 18:20:44.693 Local account: LAPTOP-5KUTK8GB\ultim
. 2019-09-27 18:20:44.693 Working directory: D:\Program Files (x86)\WinSCP
. 2019-09-27 18:20:44.693 Process ID: 6824
. 2019-09-27 18:20:44.693 Command-line: "D:\Program Files (x86)\WinSCP\WinSCP.exe"
. 2019-09-27 18:20:44.693 Time zone: Current: GMT+2, Standard: GMT+1 (Romance Standard Time), DST: GMT+2 (Romance Summer Time), DST Start: 31/03/2019, DST End: 27/10/2019
. 2019-09-27 18:20:44.693 Login time: 27 September 2019 18:20:44
. 2019-09-27 18:20:44.693 --------------------------------------------------------------------------
. 2019-09-27 18:20:44.693 Session name: ****@***.***.***.***:2222 (Site)
. 2019-09-27 18:20:44.693 Host name: ***.***.***.*** (Port: 2222)
. 2019-09-27 18:20:44.693 User name: **** (Password: No, Key file: No, Passphrase: No)
. 2019-09-27 18:20:44.693 Tunnel: No
. 2019-09-27 18:20:44.693 Transfer Protocol: SFTP (SCP)
. 2019-09-27 18:20:44.693 Ping type: Off, Ping interval: 30 sec; Timeout: 15 sec
. 2019-09-27 18:20:44.693 Disable Nagle: No
. 2019-09-27 18:20:44.693 Proxy: None
. 2019-09-27 18:20:44.693 Send buffer: 262144
. 2019-09-27 18:20:44.693 SSH protocol version: 2; Compression: No
. 2019-09-27 18:20:44.693 Bypass authentication: No
. 2019-09-27 18:20:44.693 Try agent: Yes; Agent forwarding: No; TIS/CryptoCard: No; KI: Yes; GSSAPI: Yes
. 2019-09-27 18:20:44.693 GSSAPI: Forwarding: No; Libs: gssapi32,sspi,custom; Custom:
. 2019-09-27 18:20:44.693 Ciphers: aes,chacha20,3des,WARN,des,blowfish,arcfour; Ssh2DES: No
. 2019-09-27 18:20:44.693 KEX: ecdh,dh-gex-sha1,dh-group14-sha1,rsa,WARN,dh-group1-sha1
. 2019-09-27 18:20:44.693 SSH Bugs: Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto
. 2019-09-27 18:20:44.693 Simple channel: Yes
. 2019-09-27 18:20:44.693 Return code variable: Autodetect; Lookup user groups: Auto
. 2019-09-27 18:20:44.693 Shell: default
. 2019-09-27 18:20:44.693 EOL: LF, UTF: Auto
. 2019-09-27 18:20:44.693 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes; Follow directory symlinks: No
. 2019-09-27 18:20:44.693 LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No; Exit code 1 is error: No
. 2019-09-27 18:20:44.693 SFTP Bugs: Auto,Auto
. 2019-09-27 18:20:44.693 SFTP Server: default
. 2019-09-27 18:20:44.693 Local directory: default, Remote directory: home, Update: Yes, Cache: Yes
. 2019-09-27 18:20:44.693 Cache directory changes: Yes, Permanent: Yes
. 2019-09-27 18:20:44.693 Recycle bin: Delete to: No, Overwritten to: No, Bin path:
. 2019-09-27 18:20:44.693 DST mode: Unix
. 2019-09-27 18:20:44.693 --------------------------------------------------------------------------
. 2019-09-27 18:20:44.762 Looking up host "***.***.***.***" for SSH connection
. 2019-09-27 18:20:44.762 Connecting to ***.***.***.*** port 2222
. 2019-09-27 18:20:44.777 Selecting events 63 for socket 1280
. 2019-09-27 18:20:44.777 We claim version: SSH-2.0-WinSCP_release_5.15.4
. 2019-09-27 18:20:44.793 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:44.793 Looking for incoming data
. 2019-09-27 18:20:44.793 Looking for network events
. 2019-09-27 18:20:44.793 Detected network event
. 2019-09-27 18:20:44.793 Enumerating network events for socket 1280
. 2019-09-27 18:20:44.793 Enumerated 18 network events making 18 cumulative events for socket 1280
. 2019-09-27 18:20:44.793 Handling network write event on socket 1280 with error 0
. 2019-09-27 18:20:44.793 Handling network connect event on socket 1280 with error 0
. 2019-09-27 18:20:44.793 Looking for network events
. 2019-09-27 18:20:44.809 Detected network event
. 2019-09-27 18:20:44.809 Enumerating network events for socket 1280
. 2019-09-27 18:20:44.809 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:44.809 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:44.809 Server version: SSH-2.0-ssh2js0.0.23srv
. 2019-09-27 18:20:44.809 Using SSH protocol version 2
. 2019-09-27 18:20:44.809 Have a known host key of type rsa2
. 2019-09-27 18:20:44.809 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:44.809 Looking for incoming data
. 2019-09-27 18:20:44.809 Looking for network events
. 2019-09-27 18:20:44.809 Detected network event
. 2019-09-27 18:20:44.809 Enumerating network events for socket 1280
. 2019-09-27 18:20:44.809 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:44.809 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:44.809 Using Diffie-Hellman with standard group "group14"
. 2019-09-27 18:20:44.809 Doing Diffie-Hellman key exchange with hash SHA-1
. 2019-09-27 18:20:44.862 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:44.862 Looking for incoming data
. 2019-09-27 18:20:44.862 Looking for network events
. 2019-09-27 18:20:44.878 Detected network event
. 2019-09-27 18:20:44.878 Enumerating network events for socket 1280
. 2019-09-27 18:20:44.878 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:44.878 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:44.924 Host key fingerprint is:
. 2019-09-27 18:20:44.924 ssh-rsa 2048 36:e1:fc:d8:be:10:8a:26:d9:d1:e6:1f:aa:78:cf:93 ZDiL5/w1PFnaWvEKWM6N7Jzsz/FqPMM1SpLbbDUUtSQ=
. 2019-09-27 18:20:44.924 Verifying host key rsa2 0x10001,0xc2f82f06d3309e71 df2b05aafd5fa6d2 2a02fa39c4bfabe4 611b60b1d246b1db 2c097c57770d10c6 aeca0cfc5620ef6e 3c7af414716c8472 1fe61bb135bbf7c5 6ca7da45855fe9ec 7e51866b9fa3e73f 6a5c8fdcd658b606 1a44fadac16ad2ff 71b39bee7fa0a558 9ec493b187f1cb44 d90c8b594e5f51b6 65822d123553b9bf d5fadf9818953ac5 6e3b676d224fd96f e2dd66bbf4cd38d2 d963f4a2da7f10a6 8e624dc24ecc0833 5f7cd087292d9130 1bd9268c1312e42d 6df841c5aba57494 db770d26b6b0f35a 0f97d70d3a229bdf ac3c07b1c975dd6f de14b17be883e6ee 2b67d1ea89d9eb46 e61f0b1c100ad0e1 83822f31f175a442 3def2594bf4f31cd with fingerprints ssh-rsa 2048 36:e1:fc:d8:be:10:8a:26:d9:d1:e6:1f:aa:78:cf:93 ZDiL5/w1PFnaWvEKWM6N7Jzsz/FqPMM1SpLbbDUUtSQ=
. 2019-09-27 18:20:44.978 Host key matches cached key
. 2019-09-27 18:20:44.978 Selecting events 63 for socket 1280
. 2019-09-27 18:20:44.978 Initialised AES-256 SDCTR client->server encryption
. 2019-09-27 18:20:44.978 Initialised HMAC-SHA-256 client->server MAC algorithm
. 2019-09-27 18:20:44.978 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:44.978 Looking for incoming data
. 2019-09-27 18:20:44.978 Looking for network events
. 2019-09-27 18:20:44.978 Detected network event
. 2019-09-27 18:20:44.978 Enumerating network events for socket 1280
. 2019-09-27 18:20:44.978 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:44.978 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:44.978 Initialised AES-256 SDCTR server->client encryption
. 2019-09-27 18:20:44.978 Initialised HMAC-SHA-256 server->client MAC algorithm
. 2019-09-27 18:20:44.978 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:44.978 Looking for incoming data
. 2019-09-27 18:20:44.978 Looking for network events
. 2019-09-27 18:20:45.047 Detected network event
. 2019-09-27 18:20:45.047 Enumerating network events for socket 1280
. 2019-09-27 18:20:45.047 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:45.047 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:45.047 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:45.047 Looking for incoming data
. 2019-09-27 18:20:45.047 Looking for network events
. 2019-09-27 18:20:45.095 Detected network event
. 2019-09-27 18:20:45.095 Enumerating network events for socket 1280
. 2019-09-27 18:20:45.095 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:45.095 Handling network read event on socket 1280 with error 0
! 2019-09-27 18:20:45.095 Using username "****".
. 2019-09-27 18:20:45.110 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:45.110 Looking for incoming data
. 2019-09-27 18:20:45.110 Looking for network events
. 2019-09-27 18:20:45.126 Detected network event
. 2019-09-27 18:20:45.126 Enumerating network events for socket 1280
. 2019-09-27 18:20:45.126 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:45.126 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:45.126 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:45.126 Looking for incoming data
. 2019-09-27 18:20:45.126 Looking for network events
. 2019-09-27 18:20:45.178 Detected network event
. 2019-09-27 18:20:45.178 Enumerating network events for socket 1280
. 2019-09-27 18:20:45.178 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:45.178 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:45.178 Server offered these authentication methods: password
. 2019-09-27 18:20:45.178 Prompt (password, "SSH password", <no instructions>, "&Password: ")
. 2019-09-27 18:20:49.500 Sent password
. 2019-09-27 18:20:49.500 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.500 Looking for incoming data
. 2019-09-27 18:20:49.500 Looking for network events
. 2019-09-27 18:20:49.516 Detected network event
. 2019-09-27 18:20:49.516 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.516 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.516 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.516 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.516 Looking for incoming data
. 2019-09-27 18:20:49.516 Looking for network events
. 2019-09-27 18:20:49.569 Detected network event
. 2019-09-27 18:20:49.569 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.569 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.569 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.569 Access granted
. 2019-09-27 18:20:49.569 Opening session as main channel
. 2019-09-27 18:20:49.569 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.569 Looking for incoming data
. 2019-09-27 18:20:49.569 Looking for network events
. 2019-09-27 18:20:49.586 Detected network event
. 2019-09-27 18:20:49.586 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.586 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.586 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.586 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.586 Looking for incoming data
. 2019-09-27 18:20:49.586 Looking for network events
. 2019-09-27 18:20:49.653 Detected network event
. 2019-09-27 18:20:49.653 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.653 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.653 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.653 Opened main channel
. 2019-09-27 18:20:49.653 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.653 Looking for incoming data
. 2019-09-27 18:20:49.653 Looking for network events
. 2019-09-27 18:20:49.716 Detected network event
. 2019-09-27 18:20:49.716 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.731 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.731 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.731 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.731 Looking for incoming data
. 2019-09-27 18:20:49.731 Looking for network events
. 2019-09-27 18:20:49.785 Detected network event
. 2019-09-27 18:20:49.785 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.785 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.785 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.785 Primary command failed; attempting fallback
. 2019-09-27 18:20:49.785 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.785 Looking for incoming data
. 2019-09-27 18:20:49.785 Looking for network events
. 2019-09-27 18:20:49.802 Detected network event
. 2019-09-27 18:20:49.802 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.802 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.802 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.802 Waiting for the server to continue with the initialization
. 2019-09-27 18:20:49.802 Looking for incoming data
. 2019-09-27 18:20:49.802 Looking for network events
. 2019-09-27 18:20:49.854 Detected network event
. 2019-09-27 18:20:49.854 Enumerating network events for socket 1280
. 2019-09-27 18:20:49.854 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:49.854 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:49.854 Started a shell/command
. 2019-09-27 18:20:49.854 Received 334 bytes (0)
. 2019-09-27 18:20:49.869 --------------------------------------------------------------------------
. 2019-09-27 18:20:49.869 Using SCP protocol.
. 2019-09-27 18:20:49.869 Doing startup conversation with host.
. 2019-09-27 18:20:49.869 Session upkeep
. 2019-09-27 18:20:49.869 Looking for network events
. 2019-09-27 18:20:49.869 Timeout waiting for network events
. 2019-09-27 18:20:49.885 Skipping host startup message (if any).
> 2019-09-27 18:20:49.885 echo "WinSCP: this is end-of-file:0"
. 2019-09-27 18:20:49.885 Sent 37 bytes
. 2019-09-27 18:20:49.885 There are 0 bytes remaining in the send buffer
. 2019-09-27 18:20:49.885 Looking for network events
. 2019-09-27 18:20:49.885 Timeout waiting for network events
. 2019-09-27 18:20:49.885 Read 2 bytes (332 pending)
< 2019-09-27 18:20:49.885

. 2019-09-27 18:20:49.885 Read 66 bytes (266 pending)
< 2019-09-27 18:20:49.885 ###############################################################

. 2019-09-27 18:20:49.885 Read 66 bytes (200 pending)
< 2019-09-27 18:20:49.885 ## Docker SSH ~ Because every container should be accessible ##

. 2019-09-27 18:20:49.885 Read 66 bytes (134 pending)
< 2019-09-27 18:20:49.885 ###############################################################

. 2019-09-27 18:20:49.885 Read 66 bytes (68 pending)
< 2019-09-27 18:20:49.885 ## container | /****.*** ##

. 2019-09-27 18:20:49.885 Read 66 bytes (2 pending)
< 2019-09-27 18:20:49.885 ###############################################################

. 2019-09-27 18:20:49.885 Read 2 bytes (0 pending)
< 2019-09-27 18:20:49.885

. 2019-09-27 18:20:49.885 Waiting for another 1 bytes
. 2019-09-27 18:20:49.885 Looking for incoming data
. 2019-09-27 18:20:49.885 Looking for network events
. 2019-09-27 18:20:50.306 Detected network event
. 2019-09-27 18:20:50.306 Enumerating network events for socket 1280
. 2019-09-27 18:20:50.306 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:50.306 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:50.306 Waiting for another 1 bytes
. 2019-09-27 18:20:50.306 Looking for incoming data
. 2019-09-27 18:20:50.306 Looking for network events
. 2019-09-27 18:20:50.359 Detected network event
. 2019-09-27 18:20:50.359 Enumerating network events for socket 1280
. 2019-09-27 18:20:50.359 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:50.359 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:50.359 Received 2 bytes (0)
. 2019-09-27 18:20:50.359 Read 1 bytes (1 pending)
. 2019-09-27 18:20:50.359 Read 1 bytes (0 pending)
< 2019-09-27 18:20:50.359

. 2019-09-27 18:20:50.359 Waiting for another 1 bytes
. 2019-09-27 18:20:50.359 Looking for incoming data
. 2019-09-27 18:20:50.359 Looking for network events
. 2019-09-27 18:20:50.422 Detected network event
. 2019-09-27 18:20:50.422 Enumerating network events for socket 1280
. 2019-09-27 18:20:50.422 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:20:50.422 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:20:50.422 Received 73 bytes (0)
. 2019-09-27 18:20:50.422 Received 163 bytes (0)
. 2019-09-27 18:20:50.422 Read 1 bytes (235 pending)
. 2019-09-27 18:20:50.422 Read 72 bytes (163 pending)
< 2019-09-27 18:20:50.422 (base) ]0;root@aee2107bffcc: /root@aee2107bffcc:/# export TERM=linux;

. 2019-09-27 18:20:50.422 Read 74 bytes (89 pending)
< 2019-09-27 18:20:50.422 (base) ]0;root@aee2107bffcc: /root@aee2107bffcc:/# export PS1="\w $ ";

. 2019-09-27 18:20:50.422 Read 6 bytes (83 pending)
< 2019-09-27 18:20:50.422 / $

. 2019-09-27 18:20:50.422 Read 42 bytes (41 pending)
< 2019-09-27 18:20:50.422 / $ echo "WinSCP: this is end-of-file:0"

. 2019-09-27 18:20:50.422 Read 31 bytes (10 pending)
< 2019-09-27 18:20:50.422 WinSCP: this is end-of-file:0

. 2019-09-27 18:20:50.422 Read 6 bytes (4 pending)
< 2019-09-27 18:20:50.422 / $

. 2019-09-27 18:20:50.422 Read 4 bytes (0 pending)
. 2019-09-27 18:20:50.422 Waiting for another 1 bytes
. 2019-09-27 18:20:50.422 Looking for incoming data
. 2019-09-27 18:20:50.422 Looking for network events
. 2019-09-27 18:21:05.531 Detected network event
. 2019-09-27 18:21:05.531 Enumerating network events for socket 1280
. 2019-09-27 18:21:05.531 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:21:05.531 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:21:05.531 Waiting for another 1 bytes
. 2019-09-27 18:21:05.531 Looking for incoming data
. 2019-09-27 18:21:05.531 Looking for network events
. 2019-09-27 18:21:05.591 Detected network event
. 2019-09-27 18:21:05.591 Enumerating network events for socket 1280
. 2019-09-27 18:21:05.591 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:21:05.591 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:21:05.591 Waiting for another 1 bytes
. 2019-09-27 18:21:05.591 Looking for incoming data
. 2019-09-27 18:21:05.591 Looking for network events
. 2019-09-27 18:21:21.540 Detected network event
. 2019-09-27 18:21:21.540 Enumerating network events for socket 1280
. 2019-09-27 18:21:21.540 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:21:21.540 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:21:21.540 Waiting for another 1 bytes
. 2019-09-27 18:21:21.540 Looking for incoming data
. 2019-09-27 18:21:21.540 Looking for network events
. 2019-09-27 18:21:21.621 Detected network event
. 2019-09-27 18:21:21.621 Enumerating network events for socket 1280
. 2019-09-27 18:21:21.621 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:21:21.621 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:21:21.621 Waiting for another 1 bytes
. 2019-09-27 18:21:21.621 Looking for incoming data
. 2019-09-27 18:21:21.621 Looking for network events
. 2019-09-27 18:21:37.290 Timeout waiting for network events
. 2019-09-27 18:21:37.290 Waiting for data timed out, asking user what to do.
. 2019-09-27 18:21:37.290 Asking user:
. 2019-09-27 18:21:37.290 **Host is not communicating for 15 seconds.
. 2019-09-27 18:21:37.290
. 2019-09-27 18:21:37.290 Wait for another 15 seconds?** ()
. 2019-09-27 18:21:37.290 Session upkeep
. 2019-09-27 18:21:37.822 Pooling for data in case they finally arrives
. 2019-09-27 18:21:37.822 Looking for network events
. 2019-09-27 18:21:37.822 Detected network event
. 2019-09-27 18:21:37.822 Enumerating network events for socket 1280
. 2019-09-27 18:21:37.822 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:21:37.822 Data has arrived, closing query to user.
. 2019-09-27 18:21:37.838 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:21:37.838 Waiting for another 1 bytes
. 2019-09-27 18:21:37.838 Looking for incoming data
. 2019-09-27 18:21:37.838 Looking for network events
. 2019-09-27 18:21:53.206 Timeout waiting for network events
. 2019-09-27 18:21:53.206 Waiting for data timed out, asking user what to do.
. 2019-09-27 18:21:53.206 Asking user:
. 2019-09-27 18:21:53.206 **Host is not communicating for 15 seconds.
. 2019-09-27 18:21:53.206
. 2019-09-27 18:21:53.206 Wait for another 15 seconds?** ()
. 2019-09-27 18:21:53.206 Session upkeep
. 2019-09-27 18:21:53.740 Pooling for data in case they finally arrives
. 2019-09-27 18:21:53.740 Looking for network events
. 2019-09-27 18:21:53.740 Detected network event
. 2019-09-27 18:21:53.740 Enumerating network events for socket 1280
. 2019-09-27 18:21:53.740 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:21:53.740 Data has arrived, closing query to user.
. 2019-09-27 18:21:53.748 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:21:53.748 Waiting for another 1 bytes
. 2019-09-27 18:21:53.748 Looking for incoming data
. 2019-09-27 18:21:53.748 Looking for network events
. 2019-09-27 18:22:09.158 Timeout waiting for network events
. 2019-09-27 18:22:09.158 Waiting for data timed out, asking user what to do.
. 2019-09-27 18:22:09.158 Asking user:
. 2019-09-27 18:22:09.158 **Host is not communicating for 15 seconds.
. 2019-09-27 18:22:09.158
. 2019-09-27 18:22:09.158 Wait for another 15 seconds?** ()
. 2019-09-27 18:22:09.158 Session upkeep
. 2019-09-27 18:22:09.706 Pooling for data in case they finally arrives
. 2019-09-27 18:22:09.706 Looking for network events
. 2019-09-27 18:22:09.706 Detected network event
. 2019-09-27 18:22:09.706 Enumerating network events for socket 1280
. 2019-09-27 18:22:09.706 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:22:09.706 Data has arrived, closing query to user.
. 2019-09-27 18:22:09.721 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:22:09.721 Waiting for another 1 bytes
. 2019-09-27 18:22:09.721 Looking for incoming data
. 2019-09-27 18:22:09.721 Looking for network events
. 2019-09-27 18:22:25.362 Timeout waiting for network events
. 2019-09-27 18:22:25.362 Waiting for data timed out, asking user what to do.
. 2019-09-27 18:22:25.362 Asking user:
. 2019-09-27 18:22:25.362 **Host is not communicating for 15 seconds.
. 2019-09-27 18:22:25.362
. 2019-09-27 18:22:25.362 Wait for another 15 seconds?** ()
. 2019-09-27 18:22:25.362 Session upkeep
. 2019-09-27 18:22:25.899 Pooling for data in case they finally arrives
. 2019-09-27 18:22:25.899 Looking for network events
. 2019-09-27 18:22:25.899 Detected network event
. 2019-09-27 18:22:25.899 Enumerating network events for socket 1280
. 2019-09-27 18:22:25.899 Enumerated 1 network events making 1 cumulative events for socket 1280
. 2019-09-27 18:22:25.899 Data has arrived, closing query to user.
. 2019-09-27 18:22:25.914 Handling network read event on socket 1280 with error 0
. 2019-09-27 18:22:25.914 Waiting for another 1 bytes
. 2019-09-27 18:22:25.914 Looking for incoming data
. 2019-09-27 18:22:25.914 Looking for network events

It does not look like your server accepts SFTP connections.
Can you connect with any other SFTP client?