How to make Angular form validation work in bootstrap tab for multiple form validation?

Question

Angular

Hello dear colleagues, brothers in arms.
Please help solve the problem with invalid validation.
I'm using bootstrap's angular.ui tabs site, each of the tabs has a form.
Tabs and forms are generated cyclically and I can't correctly write my own validation for each form.
I want to pass the name of the forms as

<form name="payform.{{tabname}}">
</form>

With such a scaling, an error occurs

TypeError: Converting circular structure to JSON
at Object.stringify (native)

And the validation doesn't work.