Magento 2.2.6 How to add TAB structure in admin UI component form
I found my problem, i used argument item <item name="template" xsi:type="string">templates/form/collapsible</item>
it is used to display for collapsible structure.
After remove this line of code is working fine. i think this error is occurred because we can not use tab structure
and collapsible structure
in single UI component form.