我试了这些答案，但对我不起作用，所以我试了这个。
首先，应在新的Laravel应用程序中安装Jetstream（请阅读Jetstream laravel的此文档：https://jetstream.laravel.com/2.x/installation.html）。第一步：
1.安装新的laravel项目版本8

1. composer require laravel/jetstream:*，这样就完成了继续安装jetstream

Laravel 8文档不清晰。您可以通过以下命令修复它：

php artisan jetstream:install livewire

npm install && npm run dev

• • 参考：**
• https://github.com/laravel/jetstream#installation
• https://laracasts.com/discuss/channels/inertia/laravel-8-jetstream-livewire-inertia-error

此命令：

composer require laravel/jetstream

也生成了与您为我生成的错误相同的错误，但另一个命令工作正常：

composer require laravel/jetstream:*

我尝试安装新鲜的laravel（具体的laravel项目像这样）：

composer create-project --prefer-dist laravel/laravel:^8.0 olshop-larafel

然后进入这个项目

cd olshop-larafel

安装laravel/jetstream：

composer require laravel/jetstream

一切正常。你试过安装laravel 8.0特定版本吗？
或者这个article will help you
这是我的composer.json文件：

{
    "name": "laravel/laravel",
    "type": "project",
    "description": "The Laravel Framework.",
    "keywords": [
        "framework",
        "laravel"
    ],
    "license": "MIT",
    "require": {
        "php": "^7.3",
        "fideloper/proxy": "^4.2",
        "fruitcake/laravel-cors": "^2.0",
        "guzzlehttp/guzzle": "^7.0.1",
        "laravel/framework": "^8.0",
        "laravel/jetstream": "^2.3",
        "laravel/tinker": "^2.0"
    },
    "require-dev": {
        "facade/ignition": "^2.3.6",
        "fzaninotto/faker": "^1.9.1",
        "mockery/mockery": "^1.3.1",
        "nunomaduro/collision": "^5.0",
        "phpunit/phpunit": "^9.3"
    },
    "config": {
        "optimize-autoloader": true,
        "preferred-install": "dist",
        "sort-packages": true
    },
    "extra": {
        "laravel": {
            "dont-discover": []
        }
    },
    "autoload": {
        "psr-4": {
            "App\\": "app/",
            "Database\\Factories\\": "database/factories/",
            "Database\\Seeders\\": "database/seeders/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "minimum-stability": "dev",
    "prefer-stable": true,
    "scripts": {
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover --ansi"
        ],
        "post-root-package-install": [
            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate --ansi"
        ]
    }
}