salt-minion startup

traceback

[ERROR   ] __call__() takes exactly 2 arguments (1 given)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/salt/utils/parsers.py", line 200, in parse_args
    process_option_func()
  File "/usr/lib/python2.7/site-packages/salt/utils/parsers.py", line 546, in process_config_dir
    self.config.update(self.setup_config())
  File "/usr/lib/python2.7/site-packages/salt/utils/parsers.py", line 1766, in setup_config
    ignore_config_errors=False)
  File "/usr/lib/python2.7/site-packages/salt/config/__init__.py", line 2164, in minion_config
    apply_sdb(opts)
  File "/usr/lib/python2.7/site-packages/salt/config/__init__.py", line 2298, in apply_sdb
    import salt.utils.sdb
  File "/usr/lib/python2.7/site-packages/salt/utils/sdb.py", line 14, in <module>
    import salt.loader
  File "/usr/lib/python2.7/site-packages/salt/loader.py", line 46, in <module>
    import pkg_resources
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 72, in <module>
    import packaging.requirements
  File "/usr/lib/python2.7/site-packages/packaging/requirements.py", line 59, in <module>
    MARKER_EXPR = originalTextFor(MARKER_EXPR())("marker")
TypeError: __call__() takes exactly 2 arguments (1 given)
Usage: salt-minion [options]

salt-minion: error: Error while processing <bound method Minion.process_config_dir of <salt.cli.daemons.Minion object at 0x15845d0>>: Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/salt/utils/parsers.py", line 200, in parse_args
    process_option_func()
  File "/usr/lib/python2.7/site-packages/salt/utils/parsers.py", line 546, in process_config_dir
    self.config.update(self.setup_config())
  File "/usr/lib/python2.7/site-packages/salt/utils/parsers.py", line 1766, in setup_config
    ignore_config_errors=False)
  File "/usr/lib/python2.7/site-packages/salt/config/__init__.py", line 2164, in minion_config
    apply_sdb(opts)
  File "/usr/lib/python2.7/site-packages/salt/config/__init__.py", line 2298, in apply_sdb
    import salt.utils.sdb
  File "/usr/lib/python2.7/site-packages/salt/utils/sdb.py", line 14, in <module>
    import salt.loader
  File "/usr/lib/python2.7/site-packages/salt/loader.py", line 46, in <module>
    import pkg_resources
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 72, in <module>
    import packaging.requirements
  File "/usr/lib/python2.7/site-packages/packaging/requirements.py", line 59, in <module>
    MARKER_EXPR = originalTextFor(MARKER_EXPR())("marker")
TypeError: __call__() takes exactly 2 arguments (1 given)