How can i display my json data on html page

i want to display the json data the user has put in, but it isn't showing anything. when i press the button nothing happens. my json file is named varer.json. i want to show all the json data in a tabel when i press the button. I dont get an error, there is just nothing that happens, can it be something with the fetch??? please help

here is my javascript

function showData() {
    console.log("Showing Data")
    
    // var mainData = document.getElementById("jsonData");
    // mainData.innerHTML="hello"

    fetch("varer.jsom")
    .then(response => {
        resp = response.json()
        return resp
    })
    .then(resp => {
        appendData(resp)    
    })
}

function appendData(resp){
    console.log(resp)

    var mainDiv = document.getElementById("jsonData");

    for (i=0; i< resp.length; i++)
    {
        var nameDiv = document.createElement("div")
        nameDiv.className="collapsible"
        nameDiv.innerHTML = "Name: " + resp[i].varer
        
        var ageDiv = document.createElement("div")
        ageDiv.className="content"
        ageDiv.innerHTML = "Age: " + resp[i].pris

        var picture = document.createElement("div")
        picture.className="content"
        picture.innerHTML = "Age: " + resp[i].billede
        
        

        mainDiv.appendChild(nameDiv)
        mainDiv.append(ageDiv)
        mainDiv.append(picture)

        nameDiv.addEventListener("click", function() {
            
            this.classList.toggle("active");
            
            var content = this.nextElementSibling;
            
            if (content.style.display === "block") {
              content.style.display = "none";
            } else {
              content.style.display = "block";
            }

            // if (content.style.maxHeight){
            //     content.style.maxHeight = null;
            //   } else {
            //     content.style.maxHeight = content.scrollHeight + "px";
            //   }

          });

    }
}

Here is my html.

<html>
  <head>
    <script type="module" src="varer.js"></script>
    <title>JSON Test</title>
  </head>
  <body>
    <div class="title">Expand / Collapse JSON</div>

        <div id="jsonData">
            
        </div>
    <h1>Varer</h1>
    <form id="form">
        <input placeholder="Varer" id="varer" />
        <input placeholder="pris" id="pris" />
        <input type="file" id="billede" name="img" accept="image/*">
        <input value="Submit" type="submit" id= "submit" />
        <button onclick="showData()">Click me</button>    </form>
    <form id="delete">
      <input value="Delete" type="submit" />
    </form>
  </body>
</html>

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