Strapi v4 deployment to Heroku not working

Questions and Answers
2

ooookay, I can anyswer that myself. I wanted to be extra smart and used

module.exports = ({ env }) => ({
  url: env('https://strapi-deliveroo-clone.herokuapp.com/'),
});

instead of

module.exports = ({ env }) => ({
  url: env('MY_HEROKU_URL'),
});

The quotation marks made me believe I have to replace the Heroku variable…