Golang template can't access file in embedFS

my golang code arch is as bellow:

├── embeded.go
├── go.mod
├── json
│   └── file
└── main.go

and this is my embede.go code:

package main

import "embed"

//go:embed json/*
var templatesFS embed.FS

func TemplatesFS() embed.FS {
    return templatesFS
}

now in my main.go I can’t access file in json directory:

package main

import (
    "fmt"
    "log"
    "os"
    "text/template"
)

func main() {
    tmpl := template.Must(
        template.New("json/file").
            ParseFS(TemplatesFS(), "json/file"))
    if err := tmpl.Execute(os.Stdout, "config"); err != nil {
        log.Fatal(err)
    }
}

when I run above code I got error template: json/file: "json/file" is an incomplete or empty template

but I can access the file like this:

file, err := TemplatesFS().ReadFile("json/file")

so why I can’t access it in templte.execute ?

How Can I Solve It ?

>Solution :

The error reports that the template named in the argument to New is incomplete. The template in the file json/file is named file. Use that name when parsing the template:

tmpl := template.Must(
    template.New("file").ParseFS(TemplatesFS(), "json/file"))