Hello, I have a real problem I can not install a module that I paste under addons, I have updates but if I click on install module I have this error      
File "/opt/odoo/odoo-10.0/odoo/addons/base/ir/ir_model.py", line 1064, in xmlid_lookup

    raise ValueError('External ID not found in the system: %s' % xmlid)

ParseError: "<type 'exceptions.ValueError'>: "External ID not found in the system: stock.group_stock_users" while evaluating

"[(4, ref('group_stock_users'))]"" while parsing /opt/odoo/odoo-10.0/addons/stock/data/stock_demo.xml:5, near

<record id="base.user_demo" model="res.users">

            <field eval="[(4, ref('group_stock_users'))]" name="groups_id"/>

        </record>
I do not know Beginner, help me is what i have to delete this file, or change or rename it?