Error when running envoy task, server [ server_name] is not defined

Hi everybody, I'm trying to use laravel envoy task runner to deploy an app with just a command, however when I execute envoy run deploy I het the following error message in terminal.

deployuser@gabriel-ubuntu-1:/var/www/dtcburger.es$ envoy run deploy

In TaskContainer.php line 193:

  Server [web] is not defined.


run [--continue] [--pretend] [--path PATH] [--conf CONF] [--] <task>

deployuser@gabriel-ubuntu-1:/var/www/dtcburger.es$

It can't find my server despite me adding the correct user and IP to @servers array...

This is part of my Envoy.blade.php file:

@servers(['web' => '[email protected]'])

@setup
    $on = 'web';
    $user = 'deployuser';
    $domain = 'gabrielgbtest.com';
    $repo = '[email protected]:GabotronES/projectname.git';
@endsetup


@story('deploy')
    clone
    dependencies
    migrations
    perms
    nginx
    ssl
@endstory


@task('pull', ['on' => $on, 'confirm' => true])
    git fetch origin master
    git reset --hard origin/master
@endtask

Any idea what I'm doing wrong?