Well, that's when you download the github project from lumen ago a composer install and I get this
and in the git ignore file I do not put anything to upload everything
Solution 1 Greetings if you want to install a copy of a new Lumen, better make it
composer global require "laravel/lumen-installer"
And at the end
lumen new app
And within the folder of the new project created
composer install
Solution 2 If you still get an error, try the following:
create a folder in your root directory called datase
in your project delete the composer.lock that file is in the root of the project and execute the following command:
composer update