升级到 php8 后，我现在在运行任何 composer 命令（composer、install 或 composer update）时都会遇到问题。当我这样做时，我收到此错误：
./composer.json has been updated
Running composer update unicodeveloper/laravel-paystack
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.
Problem 1
- laravel/framework is locked to version v7.28.0 and an update of this package was not requested.
- laravel/framework v7.28.0 requires php ^7.2.5 -> your php version (8.0.0) does not satisfy that requirement.
Problem 2
- laravel/tinker is locked to version v2.4.2 and an update of this package was not requested.
- laravel/tinker v2.4.2 requires php ^7.2 -> your php version (8.0.0) does not satisfy that requirement.
Problem 3
- laravel/ui is locked to version v2.2.1 and an update of this package was not requested.
- laravel/ui v2.2.1 requires php ^7.2.5 -> your php version (8.0.0) does not satisfy that requirement.
Problem 4
- livewire/livewire is locked to version v1.3.3 and an update of this package was not requested.
- livewire/livewire v1.3.3 requires php ^7.1.3 -> your php version (8.0.0) does not satisfy that requirement.
Problem 5
- facade/ignition is locked to version 2.3.7 and an update of this package was not requested.
- facade/ignition 2.3.7 requires php ^7.2.5 -> your php version (8.0.0) does not satisfy that requirement.
Problem 6
- fzaninotto/faker is locked to version v1.9.1 and an update of this package was not requested.
- fzaninotto/faker v1.9.1 requires php ^5.3.3 || ^7.0 -> your php version (8.0.0) does not satisfy that requirement.
Problem 7
- nunomaduro/collision is locked to version v4.2.0 and an update of this package was not requested.
- nunomaduro/collision v4.2.0 requires php ^7.2.5 -> your php version (8.0.0) does not satisfy that requirement.
Problem 8
- phpunit/phpunit is locked to version 8.5.8 and an update of this package was not requested.
- phpunit/phpunit 8.5.8 requires php ^7.2 -> your php version (8.0.0) does not satisfy that requirement.
Problem 9
- laravel/framework v7.28.0 requires php ^7.2.5 -> your php version (8.0.0) does not satisfy that requirement.
- fruitcake/laravel-cors v2.0.2 requires illuminate/contracts ^6|^7|^8 -> satisfiable by laravel/framework[v7.28.0].
- fruitcake/laravel-cors is locked to version v2.0.2 and an update of this package was not requested.
Installation failed, reverting ./composer.json and ./composer.lock to their original content.
在这里我试图安装unicodeveloper/laravel-paystack 请问我该如何解决这个问题？
我在尝试启动我的另一个 Laravel 项目时也得到了他：
php artisan serve
PHP Fatal error: Uncaught ErrorException: Method ReflectionParameter::getClass() is deprecated in /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php:838
Stack trace:
#0 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(838): Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
#1 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(807): Illuminate\Container\Container->resolveDependencies()
#2 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(658): Illuminate\Container\Container->build()
#3 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(609): Illuminate\Container\Container->resolve()
#4 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(733): Illuminate\Container\Container->make()
#5 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(264): Illuminate\Foundation\Application->make()
#6 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(776): Illuminate\Container\Container->Illuminate\Container\{closure}()
#7 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(658): Illuminate\Container\Container->build()
#8 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(609): Illuminate\Container\Container->resolve()
#9 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(733): Illuminate\Container\Container->make()
#10 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(159): Illuminate\Foundation\Application->make()
#11 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(101): Illuminate\Foundation\Bootstrap\HandleExceptions->getExceptionHandler()
#12 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(87): Illuminate\Foundation\Bootstrap\HandleExceptions->renderForConsole()
#13 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleException()
#14 {main}
thrown in /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php on line 838
PHP Fatal error: Uncaught ErrorException: Method ReflectionParameter::getClass() is deprecated in /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php:838
Stack trace:
#0 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(838): Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
#1 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(807): Illuminate\Container\Container->resolveDependencies()
#2 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(658): Illuminate\Container\Container->build()
#3 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(609): Illuminate\Container\Container->resolve()
#4 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(733): Illuminate\Container\Container->make()
#5 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(264): Illuminate\Foundation\Application->make()
#6 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(776): Illuminate\Container\Container->Illuminate\Container\{closure}()
#7 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(658): Illuminate\Container\Container->build()
#8 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php(609): Illuminate\Container\Container->resolve()
#9 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(733): Illuminate\Container\Container->make()
#10 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(159): Illuminate\Foundation\Application->make()
#11 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(101): Illuminate\Foundation\Bootstrap\HandleExceptions->getExceptionHandler()
#12 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(87): Illuminate\Foundation\Bootstrap\HandleExceptions->renderForConsole()
#13 /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(123): Illuminate\Foundation\Bootstrap\HandleExceptions->handleException()
#14 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleShutdown()
#15 {main}
thrown in /home/cletus/Documents/techWorld/laravel/projects/Testing/Test again/decbee/vendor/laravel/framework/src/Illuminate/Container/Container.php on line 838