hi everyone, im encountered some trouble.
im adding a new state in sale order "confirm salae order" which is after "sale order" state and im trying using the same button as accept & sign in "sale order" state
the problem is when i trigger that button from the "sale order" state it has no problem but when i already use the state in "sent" or "draft" which is sent the state to "sale order" and i use again the button it has an eror below

UncaughtClientError > TypeError

Uncaught Javascript Error > Illegal invocation

TypeError: Illegal invocation

    at Object.findOne (http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4132:345)

    at Modal._showElement (http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4452:113)

    at http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4442:388

    at execute (http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4394:475)

    at http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4410:81

    at execute (http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4394:475)

    at HTMLDivElement.handler (http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4396:75)

    at triggerTransitionEnd (http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4384:251)

    at http://localhost:8069/web/assets/557-3594973/web.assets_frontend_lazy.min.js:4396:182

below this is my code to inherit and add new button just different string