Parse html syntax to golang template – Code Overview

hello everybody, i’ve downside to view html format inside go template.
i’ve providers that return values, i insert
to one in all them like this :

func ToProduct(product ProductModel.Product) ProductResponse {
	return ProductResponse{
		Code:        product.Code,
		Title:       product.Title,
		Description: product.Description,
		Qty:         product.Qty,
		Value:       product.Value,
		Price1:      product.Price1,
		ShortNotes:  product.ShortNotes,
		Notes:       strings.Substitute(product.Notes, ",", "<br>", -1),
		Picture:       "/property/img/merchandise/" + product.Code + ".jpg",
		DivName:     product.DivName,
	}
}

in html template, i put this

however the outcome
appear as if unique textual content not new line

Invalid JSON!
Error: Parse error on line 1:
ProductResponse{ C
^
Anticipating 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '[', got 'undefined'

Just log the json output of the vars