Error install pio remote agent

Exception AttributeError: "'FileDownloader' object has no attribute '_request'" in <bound method FileDownloader.__del__ of <platformio.downloader.FileDownloader object at 0x7641d530>> ignored
Error: Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/platformio/__main__.py", line 106, in main
    cli(None, None, None)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 700, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 680, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 1027, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 1027, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 1027, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 873, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 508, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/platformio/commands/remote.py", line 52, in remote_agent_start
    pioplus_call(sys.argv[1:])
  File "/usr/local/lib/python2.7/dist-packages/platformio/pioplus.py", line 64, in pioplus_call
    pioplus_install()
  File "/usr/local/lib/python2.7/dist-packages/platformio/pioplus.py", line 52, in pioplus_install
    pm.install(item['name'], item['requirements'], silent=True)
  File "/usr/local/lib/python2.7/dist-packages/platformio/managers/package.py", line 470, in install
    pkg_dir = self._install_from_piorepo(name, requirements)
  File "/usr/local/lib/python2.7/dist-packages/platformio/managers/package.py", line 172, in _install_from_piorepo
    click.secho("Warning! Package Mirror: %s" % e, fg="yellow")
TypeError: __str__ returned non-string (type Error)

============================================================

An unexpected error occurred. Further steps:

* Verify that you have the latest version of PlatformIO using
  `pip install -U platformio` command

* Try to find answer in FAQ Troubleshooting section
  http://docs.platformio.org/page/faq.html

* Report this problem to the developers
  https://github.com/platformio/platformio-core/issues

============================================================

How to fix that ?

Have you resolved it?

Yes @ivankravets that fixed it.