<field name="type">graph</field>
<field name="arch" type="xml">
<graph string="Planning statistics" type="bar">
- <field name="account_id" group="True"/>
+ <field name="account_id"/>
<field name="sum_amount" operator="+"/>
<field name="sum_amount_real" operator="+"/>
<field name="sum_amount_tasks" operator="+"/>