当我执行composer require laravel/passport时，我得到
将^5.0版用于laravel/passport./composer. json已更新正在加载包含包信息的composer存储库更新依赖项（包括require-dev）无法将您的要求解析为可安装的包集。
问题1 -安装请求laravel/passport ^5.0 -〉satisfiable by laravel/passport[v5.0.0]. -结论：remove laravel/framework v5.5.34 -结论：不要安装laravel/framework v5.5.34 - laravel/passport v5.0.0 requires illuminate/encryption ~5.6 -〉satisfiable by illuminate/encryption[v5.6.0，v5.6.1，v5.6.2，v5.6.3]. -不要安装illuminate/encryption v5.6.0|不要安装laravel/framework v5.5.34 -不要安装illuminate/encryption v5.6.1|不要安装laravel/framework v5.5.34 -不要安装illuminate/encryption v5.6.2|不要安装laravel/framework v5.5.34 -不要安装illuminate/encryption v5.6.3|don't install laravel/framework v5.5.34 - Installation request for laravel/framework（locked at v5.5.34，required as 5.5.*）-〉satisfiable by laravel/framework[v5.5.34].
安装失败，正在将./composer.json还原为其原始内容。
我认为这意味着我的illuminate/encryption版本与此版本的laravel/passport不兼容
这是正确的吗？解决这个问题的最佳方法是什么？我甚至不知道如何查看我拥有的illuminate/encryption的版本。它不会显示在composer show中。
这里是我的composer.json

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": ">=7.0.0",
        "fideloper/proxy": "~3.3",
        "laravel/framework": "5.5.*",
        "laravel/tinker": "~1.0",
        "tymon/jwt-auth": "dev-develop"
    },
    "require-dev": {
        "filp/whoops": "~2.0",
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "~1.0",
        "phpunit/phpunit": "~6.0",
        "symfony/thanks": "^1.0"
    },
    "autoload": {
        "classmap": [
            "database/seeds",
            "database/factories"
        ],
        "psr-4": {
            "App\\": "app/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "extra": {
        "laravel": {
            "dont-discover": [
            ]
        }
    },
    "scripts": {
        "post-root-package-install": [
            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate"
        ],
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover"
        ]
    },
    "config": {
        "preferred-install": "dist",
        "sort-packages": true,
        "optimize-autoloader": true
    }
}