Why does an error pop up?

Question

Email

I'm trying to submit an order via email, but I'm getting the following error from emails: 'if (currentForm?.nodeName !== 'FORM') {throw 'The 3rd parameter is expected to be the HTML form element or the style selector of form'; }
', any help would be greatly appreciated!

Here is the code: https://codepen.io/danilst89/pen/rNyQyEJ