Hello, 

I've created a custom module and I've created an action window: 

        <act_window id="action_wv_so_invoice_status"
            multi="True"
            key2="client_action_multi" name="Change Invoice Status"
            res_model="wv.so.invoice.status" src_model="sale.order"
           view_mode="form" target="new" view_type="form" />

Now when I go from an Opportunity to the Quotations through the smart button I get this error : 

    File "/opt/odoo/odoo11/odoo/addons/base/ir/ir_actions.py", line 125, in get_bindings
    result[binding_type].append(action.read()[0])
    IndexError: list index out of range

I stop the code to debug, and I get this : 

> /opt/odoo/odoo11/odoo/addons/base/ir/ir_actions.py(125)get_bindings()
-> result[binding_type].append(action.read()[0])
(Pdb) action
ir.actions.act_window(654,)
(Pdb) action.name'Change Invoice Status'
(Pdb) action.read(['name'])
[{'name': 'Change Invoice Status', 'id': 654}]
(Pdb) action.read()
[]
(Pdb) action.read()[0]
*** IndexError: list index out of range

The variable action has the record of an action window, but isn't "readable".
What I'm doing wrong? What can I do ?