I have been working with a Json file and javascript. While opening the file I recieved this error

SyntaxError: Unexpected token e in JSON at position 0

After Some research I found out that my JSON file's content-type is actually set to html. But now I don't know how to change the content-type of my file to json. enter image description here

function generateRow(){
  console.log("WORKING");

  fetch('./addplaylist.json')
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.log(error));
  
  }