Traceback (most recent call last):
  File "/usr/local/bin/trytond-admin", line 21, in <module>
    admin.run(options)
  File "/usr/local/lib/python3.5/dist-packages/trytond/admin.py", line 54, in run
    installdeps=options.installdeps)
  File "/usr/local/lib/python3.5/dist-packages/trytond/pool.py", line 158, in init
    self.start()
  File "/usr/local/lib/python3.5/dist-packages/trytond/pool.py", line 111, in start
    register_classes()
  File "/usr/local/lib/python3.5/dist-packages/trytond/modules/__init__.py", line 382, in register_classes
    the_module.register()
  File "/usr/local/lib/python3.5/dist-packages/trytond/modules/currency/__init__.py", line 12, in register
    module='currency', type_='model')
  File "/usr/local/lib/python3.5/dist-packages/trytond/pool.py", line 95, in register
    assert (cls, depends) not in mpool, cls
AssertionError: <class 'trytond.modules.currency.currency.Currency'>

OR

Traceback (most recent call last):
  File "/usr/local/bin/trytond-admin", line 21, in <module>
    admin.run(options)
  File "/usr/local/lib/python3.5/dist-packages/trytond/admin.py", line 54, in run
    installdeps=options.installdeps)
  File "/usr/local/lib/python3.5/dist-packages/trytond/pool.py", line 158, in init
    self.start()
  File "/usr/local/lib/python3.5/dist-packages/trytond/pool.py", line 111, in start
    register_classes()
  File "/usr/local/lib/python3.5/dist-packages/trytond/modules/__init__.py", line 382, in register_classes
    the_module.register()
  File "/usr/local/lib/python3.5/dist-packages/trytond/modules/country/__init__.py", line 13, in register
    module='country', type_='model')
  File "/usr/local/lib/python3.5/dist-packages/trytond/pool.py", line 95, in register
    assert (cls, depends) not in mpool, cls
AssertionError: <class 'trytond.modules.country.country.Country'>