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Permission denied in running cli

See original GitHub issue

When i try to run my dumper.py as a periodic task that calls telegram-cli rather than running cli in background manually(test branch is not stable and will crash) , i get open[config_file]: Permission denied error when pytg tries to run cli:

[2016-02-14 19:13:02,692: DEBUG/MainProcess] Task accepted: tasks.run_dumper[fd4bad84-f3d8-4383-b098-3636f62649fe] pid:3788
[2016-02-14 19:13:02,699: INFO/Worker-2] Starting Telegram Executable: "/home/telegramd/tgchannel/tg/bin/telegram-cli -R -W -P 4458 -k /home/telegramd/tgchannel/tg/server.pub --json"
[2016-02-14 19:13:02,703: DEBUG/Worker-2] Parsing raw: Argument help - <command> (needed)
[2016-02-14 19:13:02,704: DEBUG/Worker-2] Sending command > [disable_preview]  help
<
open[config_file]: Permission denied
[2016-02-14 19:13:02,709: INFO/Worker-2] CLI did not responde.
[2016-02-14 19:13:03,710: DEBUG/Worker-2] Parsing raw: Argument help - <command> (needed)
[2016-02-14 19:13:03,711: DEBUG/Worker-2] Sending command > [disable_preview]  help
<
[2016-02-14 19:13:03,711: INFO/Worker-2] CLI did not responde.
[2016-02-14 19:13:04,716: ERROR/MainProcess] Task tasks.run_dumper[fd4bad84-f3d8-4383-b098-3636f62649fe] raised unexpected: AssertionError('CLI Process died.',)
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/site-packages/celery/app/trace.py", line 240, in trace_task
    R = retval = fun(*args, **kwargs)
  File "/usr/local/lib/python3.4/site-packages/celery/app/trace.py", line 438, in __protected_call__
    return self.run(*args, **kwargs)
  File "/home/telegramd/telegram_dumper/tasks.py", line 13, in run_dumper
    main()
  File "/home/telegramd/telegram_dumper/dumper.py", line 170, in main
    pubkey_file="/home/telegramd/tgchannel/tg/server.pub")
  File "/usr/local/lib/python3.4/site-packages/pytg-0.4.5-py3.4.egg/pytg/__init__.py", line 50, in __init__
AssertionError: CLI Process died.

P.S: i’m running pytg as daemon in supervisord.