How to deploy a laravel nova app using digitalocean apps

I am trying to deploy a laravel nova application using digitalocean apps. I have added the nova username (email used to register on nova.laravel.com) and the nova password (nova license token) as app level environment variable.

When the build runs I get the following error below

Warning from nova.laravel.com: 
[2022-07-21 11:43:25]        
[2022-07-21 11:43:25]        ***************************************************
[2022-07-21 11:43:25]        Unable to find user with the given email address: .
[2022-07-21 11:43:25]        ***************************************************
[2022-07-21 11:43:25]            Failed to download laravel/nova from dist: The 'https://nova.laravel.com/dist/laravel/nova/laravel-nova-f33003b1991491165e8822680e9a827f33c279c5-zip-383f38.zip' URL could not be accessed (HTTP 403): HTTP/2 403 
[2022-07-21 11:43:25]            Now trying to download from source
[2022-07-21 11:43:25]          - Syncing laravel/nova (4.2.1) into cache
[2022-07-21 11:43:27]        
[2022-07-21 11:43:27]        In Git.php line 484:
[2022-07-21 11:43:27]                                                                                       
[2022-07-21 11:43:27]          Failed to execute git clone --mirror -- 'git@github.com:laravel/nova.git' '  
[2022-07-21 11:43:27]          /layers/heroku_php/shim/php/.composer/cache/vcs/git-github.com-laravel-nova  
[2022-07-21 11:43:27]          .git/'

What can I do to fix this?