File "C:\Program Files (x86)\Odoo 10.0\server\odoo\http.py", line 638, in _handle_exception
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\http.py", line 675, in dispatch
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\http.py", line 331, in _call_function
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\service\model.py", line 119, in wrapper
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\http.py", line 324, in checked_call
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\http.py", line 933, in __call__
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\http.py", line 504, in response_wrap
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\addons\web\controllers\main.py", line 820, in search_read
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\addons\web\controllers\main.py", line 842, in do_search_read
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\models.py", line 4686, in search_read
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\models.py", line 3012, in read
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\models.py", line 5201, in __getitem__
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\fields.py", line 869, in __get__
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\fields.py", line 980, in determine_value
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\fields.py", line 935, in compute_value
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\fields.py", line 926, in _compute_value
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\addons\point_of_sale\models\pos_config.py", line 162, in _compute_current_session_user
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\fields.py", line 863, in __get__
  File "C:\Program Files (x86)\Odoo 10.0\server\odoo\models.py", line 4813, in ensure_one
ValueError: Expected singleton: pos.session(918, 917)

Jaques Swanepoel

الكاتب

So after 48 hours of no sleep I have figured this out:

System: Odoo 10 Enterprise

Platform: Windows Server 2008 r2

Actions:

1. Delete all sessions in C:\Users\Administrator\AppData\Local\OpenERP S.A\Odoo\sessions

2. Open pgAdmin III

3. Use Object browser and browse to:

a. PostgreSQL (Enter Password)

b. Database (Your Database name)

c. Schemas

d. public

e. Tables

f. pos_session

4. On the right window, select Properties at the top

5. Right click on rows

6. Select View Data

7. Select View all rows

8. Scroll down to the bottom and then to the right and find the column called state

9. Working your way upwards change and make sure all is closed

10. When done, select save.

11. Test the system

Regards,

Jaques

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