How to fix laravel/ui error to upgrade Laravel after upgrading PHP to 8.0

Question

I'm trying to upgrade Laravel after PHP was upgraded to 8.0 with brew on macos, but I'm getting the errors below. How should I fix it ?

$ composer update                                                                                                                  ✔ │ 59% hdd │ 5.43G RAM │ 14:05:07 │ ⇣0.18 KiB/s ⇡1.51 KiB/s 192.168.1.69 IP │ 213.163.173.1 IP 
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Conclusion: don't install laravel/framework v8.12.0 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.12.1 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.12.2 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.12.3 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.13.0 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.14.0 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.15.0 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.16.0 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.16.1 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.17.0 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.17.1 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.17.2 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.18.0 (conflict analysis result)
    - Conclusion: don't install laravel/framework v8.18.1 (conflict analysis result)
    - laravel/ui[v2.1.0, ..., v2.4.1] require php ^7.2.5 -> your php version (8.0.0) does not satisfy that requirement.
    - illuminate/support[v7.0.0, ..., v7.28.4] require php ^7.2.5 -> your php version (8.0.0) does not satisfy that requirement.
    - laravel/framework[v8.0.0, ..., v8.11.2] require php ^7.3 -> your php version (8.0.0) does not satisfy that requirement.
    - laravel/ui[v2.5.0, ..., 2.x-dev] require illuminate/support ^7.0 -> satisfiable by illuminate/support[v7.0.0, ..., 7.x-dev].
    - Only one of these can be installed: illuminate/support[dev-master, v5.5.0, ..., 5.8.x-dev, v6.0.0, ..., 6.x-dev, v7.0.0, ..., 7.x-dev, v8.0.0, ..., 8.x-dev], laravel/framework[v8.0.0, ..., 8.x-dev]. laravel/framework replaces illuminate/support and thus cannot coexist with it.
    - Root composer.json requires laravel/framework ^8.0 -> satisfiable by laravel/framework[v8.0.0, ..., 8.x-dev].
    - Root composer.json requires laravel/ui ^2.1 -> satisfiable by laravel/ui[v2.1.0, ..., 2.x-dev].

=== EDIT 2020-12-10 ===

composer.json:

{
    "name": "laravel/laravel",
    "type": "project",
    "description": "The Laravel Framework.",
    "keywords": [
        "framework",
        "laravel"
    ],
    "license": "MIT",
    "require": {
        "php": "^8.0",
        "fideloper/proxy": "^4.2",
        "fruitcake/laravel-cors": "^2.0",
        "guzzlehttp/guzzle": "^7.0.1",
        "laravel/framework": "^8.0",
        "laravel/passport": "^10.0.1",
        "laravel/tinker": "^2.0",
        "laravel/ui": "^2.1"
    },
    "require-dev": {
        "facade/ignition": "^2.3.6",
        "fakerphp/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"
        ]
    }
}

Below

Nico Haase · Accepted Answer · 2020-12-10T13:20:11.117

5

As written in these multiple lines of errors: you are using outdated packages that are not yet compatible with PHP 8, nor with each other.

You require laravel/ui in v2 which does only support Laravel v7, along with laravel/framework which is the core of Laravel v8. Either update laravel/ui to v3, or downgrade Laravel to v7. This problem does not related to PHP8 from my point of view - it's a miracle that you haven't had any problems before

edited Dec 10 '20 at 13:20

answered Dec 10 '20 at 13:13

Nico Haase

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I was following this guide to update: https://blog.laravel.com/laravel-php-8-support – DevonDahon Dec 10 '20 at 13:16
So, can you share more details, like the content of `composer.json`? – Nico Haase Dec 10 '20 at 13:16
Sorry, I maybe found the problem - need to edit my answer – Nico Haase Dec 10 '20 at 13:17
1

I've just updated my answer to include my `composer.json` – DevonDahon Dec 10 '20 at 13:19
2

Thanks a lot! Indeed updating `package.json` to `"laravel/ui": "^3.0"` fixed my issue. Don't know why so much downvotes for this question. – DevonDahon Dec 11 '20 at 08:38

How to fix laravel/ui error to upgrade Laravel after upgrading PHP to 8.0

1 Answers1