Hello everybody!!

Need your help  please.

When i want to start the service odoo i got this error:

root@rihano-SATELLITE-L850-1X4:/opt/odoo/odoo# ./odoo-bin 

Traceback (most recent call last):

  File "./odoo-bin", line 5, in <module>

    import odoo

  File "/opt/odoo/odoo/odoo/__init__.py", line 84, in <module>

    from . import modules

  File "/opt/odoo/odoo/odoo/modules/__init__.py", line 8, in <module>

    from . import db, graph, loading, migration, module, registry

  File "/opt/odoo/odoo/odoo/modules/graph.py", line 10, in <module>

    import odoo.tools as tools

  File "/opt/odoo/odoo/odoo/tools/__init__.py", line 9, in <module>

    from .misc import *

  File "/opt/odoo/odoo/odoo/tools/misc.py", line 29, in <module>

    from lxml import etree

ImportError: cannot import name 'etree'