pysearpc.common.SearpcError: Error received: 511 Unknown service (In _start_service)

SEAFILECLIENT VERSION:
seafile-client 6.2.2-1 installed via yaourt from https://aur.archlinux.org/packages/seafile-client/

LINUX:
Linux rootikzsrv01 4.16.13-2-ARCH #1 SMP PREEMPT Fri Jun 1 18:46:11 UTC 2018 x86_64 GNU/Linux
OS: Arch Linux x86_64
Hostname: rootikzsrv01
Kernel Release: 4.16.13-2-ARCH
Uptime: 46 days, 19:06
WM: None
DE: None
Packages: 428
Processor Type: Intel® Celeron® CPU J1900 @ 1.99GHz
Root: 335G / 2.7T (12%) (ext4)

BASH:
[root@rootikzsrv01 ~]# mkdir seafile-client

[root@rootikzsrv01 ~]# seaf-cli init -d /root/seafile-client
done
Successly create configuration dir /root/.ccnet.
Writen seafile data directory /root/seafile-client/seafile-data to /root/.ccnet/seafile.ini

[root@rootikzsrv01 ~]# seaf-cli start
Starting ccnet daemon …
Started: ccnet daemon …
Starting seafile daemon …
Started: seafile daemon …

[root@rootikzsrv01 ~]# pgrep seaf -a
18819 /opt/seafile/seafile-server-6.2.5/seafile/bin/seafile-controller -c /opt/seafile/ccnet -d /opt/seafile/seafile-data -F /opt/seafile/conf
18838 seaf-server -F /opt/seafile/conf -c /opt/seafile/ccnet -d /opt/seafile/seafile-data -l /opt/seafile/logs/seafile.log -P /opt/seafile/pids/seaf-server.pid
21834 seaf-daemon --daemon -c /root/.ccnet -d /root/seafile-client/seafile-data -w /root/seafile-client/seafile
23684 seaf-daemon --daemon -c /root/.ccnet -d /root/seafile-client/seafile-data -w /root/seafile-client/seafile

[root@rootikzsrv01 ~]# seaf-cli download -d /root/seafile-client/seafile -l 7093e453-5155-456d-b791-9982e29144fd -s mycoolseafileurl -u horst -p horstspwd123
Starting to download …
Library 7093e453-5155-456d-b791-9982e29144fd will be downloaded to /root/seafile-client/seafile
Traceback (most recent call last):
File “/usr/bin/seaf-cli”, line 861, in
main()
File “/usr/bin/seaf-cli”, line 857, in main
args.func(args)
File “/usr/bin/seaf-cli”, line 467, in seaf_download
email, random_key, enc_version, more_info)
File “/usr/lib/python2.7/site-packages/pysearpc/client.py”, line 110, in newfunc
ret_str = self.call_remote_func_sync(fcall_str)
File “/usr/lib/python2.7/site-packages/ccnet/rpc.py”, line 92, in call_remote_func_sync
req_id = self._start_service(client)
File “/usr/lib/python2.7/site-packages/ccnet/rpc.py”, line 36, in _start_service
raise SearpcError(“Error received: %s %s (In _start_service)” % (rsp.code, rsp.code_msg))
pysearpc.common.SearpcError: Error received: 511 Unknown service (In _start_service)

[root@rootikzsrv01 ~]# seaf-cli download -d /root/seafile-client/seafile -l 7093e453-5155-456d-b791-9982e29144fd -s mycoolseafileurl -u horst -p WRONGPASSWORD
Traceback (most recent call last):
File “/usr/bin/seaf-cli”, line 861, in
main()
File “/usr/bin/seaf-cli”, line 857, in main
args.func(args)
File “/usr/bin/seaf-cli”, line 429, in seaf_download
token = get_token(url, username, password, tfa, conf_dir)
File “/usr/bin/seaf-cli”, line 241, in get_token
token_json = urlopen("%s/api2/auth-token/" % url, data=data, headers=headers)
File “/usr/bin/seaf-cli”, line 208, in urlopen
resp = urllib2.urlopen(req)
File “/usr/lib/python2.7/urllib2.py”, line 154, in urlopen
return opener.open(url, data, timeout)
File “/usr/lib/python2.7/urllib2.py”, line 435, in open
response = meth(req, response)
File “/usr/lib/python2.7/urllib2.py”, line 548, in http_response
‘http’, request, response, code, msg, hdrs)
File “/usr/lib/python2.7/urllib2.py”, line 473, in error
return self._call_chain(*args)
File “/usr/lib/python2.7/urllib2.py”, line 407, in _call_chain
result = func(*args)
File “/usr/lib/python2.7/urllib2.py”, line 556, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 400: BAD REQUEST

[root@rootikzsrv01 ~]# seaf-cli stop

[root@rootikzsrv01 ~]# seaf-cli download -d /root/seafile-client/seafile -l 7093e453-5155-456d-b791-9982e29144fd -s mycoolseafileurl -u horst -p horstspwd123
Traceback (most recent call last):
File “/usr/bin/seaf-cli”, line 861, in
main()
File “/usr/bin/seaf-cli”, line 857, in main
args.func(args)
File “/usr/bin/seaf-cli”, line 429, in seaf_download
token = get_token(url, username, password, tfa, conf_dir)
File “/usr/bin/seaf-cli”, line 222, in get_token
device_id = get_peer_id(conf_dir)
File “/usr/bin/seaf-cli”, line 217, in get_peer_id
info = ccnet_rpc.get_session_info()
File “/usr/lib/python2.7/site-packages/pysearpc/client.py”, line 110, in newfunc
ret_str = self.call_remote_func_sync(fcall_str)
File “/usr/lib/python2.7/site-packages/ccnet/rpc.py”, line 71, in call_remote_func_sync
client = self.pool.get_client()
File “/usr/lib/python2.7/site-packages/ccnet/pool.py”, line 29, in get_client
client = self._create_client()
File “/usr/lib/python2.7/site-packages/ccnet/pool.py”, line 21, in _create_client
client.connect_daemon()
File “/usr/lib/python2.7/site-packages/ccnet/client.py”, line 128, in connect_daemon
return self.connect_daemon_with_pipe()
File “/usr/lib/python2.7/site-packages/ccnet/client.py”, line 110, in connect_daemon_with_pipe
raise NetworkError(“Can’t connect to daemon”)
ccnet.errors.NetworkError: Can’t connect to daemon

LOGS:

[root@rootikzsrv01 ~]# tail /root/.ccnet/logs/*
==> /root/.ccnet/logs/ccnet.log <==
[07/27/18 17:11:17] …/common/peer.c(943): Local peer down
[07/27/18 17:11:17] …/common/session.c(398): Accepted a local client
[07/27/18 17:11:17] …/common/session.c(398): Accepted a local client
[07/27/18 17:11:17] …/common/peer.c(943): Local peer down
[07/27/18 17:11:17] …/common/peer.c(943): Local peer down
[07/27/18 17:11:42] …/common/session.c(398): Accepted a local client
[07/27/18 17:11:42] …/common/peer.c(943): Local peer down
[07/27/18 17:13:19] …/common/session.c(398): Accepted a local client
[07/27/18 17:13:19] …/common/session.c(369): Exit at Fri Jul 27 17:13:19 2018

==> /root/.ccnet/logs/seafile.log <==
[07/27/18 17:10:03] seaf-daemon.c(486): starting seafile client 6.2.2
[07/27/18 17:10:04] seafile-session.c(382): client id = 5a6595dc874ffcf24071007320c86c85c83a2baa, client_name = `�j�iU
[07/27/18 17:10:08] seaf-daemon.c(513): rpc server started.

I have the same issue and I’m also on arch linux.

Same here on arch linux. If i used aur package.
If i build without yaourt/aur its runs fine.

wget https://github.com/haiwen/seafile-client/archive/v6.2.3.tar.gz
tar xvzf v6.2.3.tar.gz
cd seafile-client-6.2.3/
cmake .
make
sudo make install

Same for me but on Debian9:

$ seaf-cli start
Starting ccnet daemon ...
Started: ccnet daemon ...
Starting seafile daemon ...
Started: seafile daemon ...
Traceback (most recent call last):
  File "/usr/bin/seaf-cli", line 845, in <module>
    main()
  File "/usr/bin/seaf-cli", line 841, in main
    args.func(args)
  File "/usr/bin/seaf-cli", line 642, in seaf_status
    tasks = seafile_rpc.get_clone_tasks()
  File "/usr/lib/python2.7/dist-packages/pysearpc/client.py", line 110, in newfunc
    ret_str = self.call_remote_func_sync(fcall_str)
  File "/usr/lib/python2.7/dist-packages/ccnet/rpc.py", line 92, in call_remote_func_sync
    req_id = self._start_service(client)
  File "/usr/lib/python2.7/dist-packages/ccnet/rpc.py", line 36, in _start_service
    raise SearpcError("Error received: %s %s (In _start_service)" % (rsp.code, rsp.code_msg))
pysearpc.common.SearpcError: Error received: 511 Unknown service (In _start_service)
$ uname -a
Linux vm-seafile 4.9.0-7-amd64 #1 SMP Debian 4.9.110-3+deb9u1 (2018-08-03) x86_64 GNU/Linux

(installed CLI version only following https://help.seafile.com/en/syncing_client/install_linux_client.html)