In 01 folder. Error with command: yarn dev

[mohamedmehdigara]

{ errors: [ { title: 'Forbidden', status: 403 } ] }
UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "#".
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.