Can´t get it install

>> git clone https://github.com/akaunting/akaunting.git
Cloning into 'akaunting'...
remote: Enumerating objects: 17844, done.

##############################################

>> composer install
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
!!!!!!! post composer install --> ERROR 1
Generating autoload files
> Illuminate\Foundation\ComposerScripts::postInstall
> php artisan ide-helper:generate
Script php artisan ide-helper:generate handling the post-install-cmd event returned with error code 1
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

################################################

>>composer update
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Carbon 1 is deprecated, see how to migrate to Carbon 2.
https://carbon.nesbot.com/docs/#api-carbon-2
You can run ".\vendor\bin\upgrade-carbon" to get help in updating carbon and other frameworks and libraries that depend on it.
> Illuminate\Foundation\ComposerScripts::postUpdate
> php artisan ide-helper:generate

Script php artisan ide-helper:generate handling the post-update-cmd event returned with error code 1
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

################################################

>> php artisan serve
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
In Date.php line 10:

Declaration of Jenssegers\Date\Date::until($since = NULL) should be compatible with Carbon\Carbon::until($other = NULL, $absolute = false, $short = false, $parts = 1)
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

#################################################


What I am missing?
How can I fix this issues?

Hello,

Here you can download the stable version of Akaunting https://akaunting.com/download

Regards

Remove cache files from framework/data/cache