Error when inserting @planetscale: fetch is not a function

[haris-codes]

Hi, I am trying to insert rows into a table but it fails with the following error. Can someone please help?

const response = await fetch(url.toString(), {
                           ^
TypeError: fetch is not a function
    at postJSON (.../node_modules/@planetscale/database/dist/cjs/index.js:125:28)

I am new to web development and coding in general. So please humor me if it's a silly question. Thanks!