Error after placing order for 0€ product – circle loading bar loop – TypeError

Hi there,

i have a problem after clicking on “Place order” button for a product that costs 0€.
The loading circle appears and gets into an endless loop.
The DevTools throw this error:

Uncaught TypeError: Cannot read properties of undefined (reading ‘indexOf’)
at HTMLButtonElement. (sc-checkout.min.js?ver=1.0.9:1:3735)
at HTMLDivElement.dispatch (jquery.min.js?ver=3.6.1:2:43064)
at y.handle (jquery.min.js?ver=3.6.1:2:41048)

I think this relates to the 0€ product, but i need to get a workaround for this.

Thanks in advance

JD