正确显示所有内容时，范围不能迭代true？

I'm having a weird issue with Go templates. For some reason when I use double range it stops rendering everything below it in the code.

// Index.html
{{define "index"}}
    {{range $k, $element := .Items}}
        {{range $element}}
            {{.Title}}
        {{end}}
    {{end}}
{{end}}

This is my Go code:

data := IndexData{
    Items: items,
}

IndexTemplate := template.Must(template.New("skeleton.html").Funcs(FuncTemplate).ParseFiles("skeleton.html", "index.html"))
IndexTemplate.ExecuteTemplate(w, "skeleton", data)

It does show the data correctly on my page and there are no errors. The only problem here is that it stops the rendering of the page after the last item is displayed.

In my skeleton I display my templates like this, depending on what page they're visiting:

// Skeleton.html
{{define "skeleton"}}
    {{block "index".}}{{end}}
    {{block "account.register".}}{{end}}
    {{block "account.login".}}{{end}}
    {{block "account.profile".}}{{end}}
{{end}}

Why does it stop rendering after the last item is displayed from the range?

EDIT:

Only error displayed is executing "index" at <$element>: range can't iterate over true

EDIT 2:

.Item is a map[string]interface{} that contains the following:

map[result:[map[Title:Hello World2 Content:Lorem ipsum dolor sit amet2...] map[Title:Hello World Content:Lorem ipsum dolor sit amet...]] success:true]

Solution

I managed to solve this by properly returning the data I need to use without the success:true part as well as using it as interface{} so I don't have to use 2 range loops.

The outer range iterates over a map with the keys result and success. The inner range attempts to iterate over the values for these keys. The value for success is true. It's not possible to range on a bool.

Change the template range over result only:

{{define "index"}}
        {{range .Items.result}}
            {{.Title}}
        {{end}}
{{end}}

Also, modify the code to check and handle the error returned from ExecuteTemplate.