Creating playlist endpoint returning "Missing required filed name: name"

[JuanRamirez2000]

Currently creating an app that uses the spotify web api to create a playlist for the user. The app runs everything server side, auth works well, but the endpoint:

https://api.spotify.com/v1/users/{user_id}/playlists 

gives me the error: { error: { status: 400, message: 'Missing required field: name' } }

This is a code snippet that I am using to generate the playlist

const BASE_URL = "https://api.spotify.com/v1";

const createPlaylistParams = new URLSearchParams({
      name: playlistName,
    }).toString();

const createPlaylistReponse = await fetch(
     `${BASE_URL}/users/${currentUser.id}/playlists${createPlaylistParams}`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${access_token}`,
        },
      }
    );

Any help and advice would be greatly appreciated.

[EPICHICKENSOUP]

Hello,

I'm not sure the JS equivalent, but changing my Python requests.post() parameter from data to json did the trick.

(from a superficial Google search I'd assume your solution is something like swap your new URLSearchParams() with JSON.stringify(), but I'm not confident)