backpack-for-laravel Error install backpack for Laravel 5.3 - laravel-backpack

Question

When i try install and i have this error:
# composer require backpack/base
Using version ^0.7.3 for backpack/base
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Installation request for backpack/base ^0.7.3 -> satisfiable by backpack/base[0.7.3].
- backpack/base 0.7.3 requires laravel/framework 5.3.* -> satisfiable by laravel/framework[5.3.x-dev, v5.3.0, v5.3.0-RC1, v5.3.1, v5.3.10, v5.3.11, v5.3.12, v5.3.13, v5.3.14, v5.3.15, v5.3.16, v5.3.17, v5.3.18, v5.3.19, v5.3.2, v5.3.3, v5.3.4, v5.3.5, v5.3.6, v5.3.7, v5.3.8, v5.3.9] but these conflict with your requirements or minimum-stability.
Installation failed, reverting ./composer.json to its original content.
How fix that?

Answer 1

You're probably running a Laravel 5.2 app. If so, you have two options:
1) Upgrade from Laravel 5.2 to Laravel 5.3, then try again, it will most definitely work. The Laravel upgrade takes about about 1 hour for a medium-sized project, but you'll have all the benefits of using the latest and greatest (both Laravel and Backpack).
2) Install Backpack for Laravel 5.2, but please be aware you're running an old Backpack version and you won't be receiving any updates or new features.
My recommendation, of course, is option #1. In the end, you'll still need to update Laravel, then update Backpack, so it's best to just do it now.