You added an actionelement instead of an actionattribute.
Look at how you added other attributes to elements, such as the src attribute on the img element. That’s what you want to do for the action attribute on the form element.
Now you are back to adding an action element instead of an action attribute.
The original HTML for the form is:
<form>
</form>
There are two tags here, an opening <form> tag and a closing </form> tag. That is all you need for the form. Do not add any more tags. You just want to add the action attribute to the form, which means adding it to the opening <form> tag.