You're trying to install cartalyst/stripe-laravel which requires you to be on Laravel 7. You're still on Laravel 5.8.
You need to install version 10 for Laravel 5.8
composer require cartalyst/stripe-laravel:^10.0
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Help, I am pretty sure this is already install but I just tried to require it to see and I am getting this.
Laravel Framework 5.8.35
Using version ^7.27 for stripe/stripe-php
./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
- Conclusion: don't install cartalyst/stripe-laravel v12.0.0
- Conclusion: don't install cartalyst/stripe-laravel 12.x-dev
- Conclusion: remove laravel/framework v5.8.35
- Installation request for cartalyst/stripe-laravel ^12.0 -> satisfiable by cartalyst/stripe-laravel[12.x-dev, 12.0.x-dev, v12.0.0].
- Conclusion: don't install laravel/framework v5.8.35
- cartalyst/stripe-laravel 12.0.x-dev requires illuminate/support ^7.0 -> satisfiable by laravel/framework[7.x-dev], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.2.0].
- Can only install one of: laravel/framework[7.x-dev, v5.8.35].
- don't install illuminate/support 7.x-dev|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.0|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.1|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.2|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.3|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.4|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.5|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.6|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.7|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.0.8|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.1.0|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.1.1|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.1.2|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.1.3|don't install laravel/framework v5.8.35
- don't install illuminate/support v7.2.0|don't install laravel/framework v5.8.35
- Installation request for laravel/framework (locked at v5.8.35, required as 5.8.*) -> satisfiable by laravel/framework[v5.8.35].
Installation failed, reverting ./composer.json to its original content.
You're trying to install cartalyst/stripe-laravel which requires you to be on Laravel 7. You're still on Laravel 5.8.
You need to install version 10 for Laravel 5.8
composer require cartalyst/stripe-laravel:^10.0
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