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

HI,

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>
    main()
  File "/usr/bin/seaf-cli", line 841, in main
    args.func(args)
  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/client.py", line 112, in newfunc
    return fret(ret_str)
  File "/usr/lib/python2.7/dist-packages/pysearpc/client.py", 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.

Regards