Failed to add download task: Argument can't be NULL

Hi, I am new at Seafile and just installed Seafile seafile-server-6.1.2 on ubuntu 16.04 with Mysql and Apache
I can access the server via a webbrowser and i also have installed a android client and it is syncing my photos fine.

Now i have installed a seafile client for windows (windows 10 ) and when i drop a folder (which contains no subfolders
on (select or drop a folder to sync) i get ap popup saying

Failed to add download task: Argument can’t be NULL

when i then look via the web browser and refresh i see the name of the folder i dropped on the client and it is empty.

What can be wrong?

Did a complete reinstall and everything is fine now.


Using the seaf-cli on linux and having the same issue as you.
But reinstalling did not solve the issue :worried:

error is

~/.ccnet# seaf-cli download -l b2e74b5a-6018-470c-8211-b8800dc6046b -s https://server -d /tmp/lib -u user  -p pwd
Starting to download ...
Library b2e74b5a-6018-470c-8211-b8800dc6046b will be downloaded to /tmp/lib
Traceback (most recent call last):
  File "/usr/bin/seaf-cli", line 845, in <module>
  File "/usr/bin/seaf-cli", line 841, in main
  File "/usr/bin/seaf-cli", line 459, in seaf_download
    email, random_key, enc_version, more_info)
  File "/usr/lib/python2.7/dist-packages/pysearpc/", line 112, in newfunc
    return fret(ret_str)
  File "/usr/lib/python2.7/dist-packages/pysearpc/", line 25, in _fret_string
    raise SearpcError(dicts['err_msg'])
pysearpc.common.SearpcError: Argument can't be NULL

Same with Sync action.
But i can create a library from the client.

There is no specific log.