php - syntax error, unexpected ')' after Laravel update

Question

I have updated my laravel project to "laravel/framework": "^8.12" from laravel 5.7, but after updating when I run composer dump-autoload it returns this error

Generating optimized autoload files> IlluminateFoundationComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi

In TestDatabases.php line 148:

  syntax error, unexpected ')'

here is my composer.json

{
    "name": "laravel/laravel",
    "type": "project",
    "description": "The Laravel Framework.",
    "keywords": [
        "framework",
        "laravel"
    ],
    "license": "MIT",
    "require": {
        "php": "^7.3|^8.0",
        "fideloper/proxy": "^4.4",
        "fruitcake/laravel-cors": "^2.0",
        "guzzlehttp/guzzle": "^7.0.1",
        "intervention/image": "^2.5",
        "laravel/framework": "^8.12",
        "laravel/sanctum": "^2.8",
        "laravel/tinker": "^2.5",
        "laravel/ui": "^2.0",
        "barryvdh/laravel-dompdf": "^0.8.3",
        "nao-pon/flysystem-google-drive": "~1.1",
        "spatie/laravel-backup": "^6.14"
    },
    "require-dev": {
        "facade/ignition": "^2.5",
        "fakerphp/faker": "^1.9.1",
        "laravel/sail": "^1.0.1",
        "mockery/mockery": "^1.4.2",
        "nunomaduro/collision": "^5.0",
        "phpunit/phpunit": "^9.3.3"
    },
    "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/"
        },
        "files": [
            "app/Helpers/helpers.php",
            "app/Helpers/agent_helper.php",
            "app/Helpers/user-helpers.php"
        ]
    },
    "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"
        ]
    }
}

how to solve this error?

question from:https://stackoverflow.com/questions/66061548/syntax-error-unexpected-after-laravel-update

Answer 1

You need to upgrade your PHP installation to at least version 7.3 to resolve the issue.

PHP 7.2 is EOL (end of life) since 30 Nov 2020!

As already stated in the comments:

Laravel 8 requires php 7.3 or higher

Larvel 8 has the following PHP version constraint in composer.json:

"require": {
  "php": "^7.3|^8.0"
}

Do NOT run composer with the --ignore-platform-reqs flag unless you have a (very rare) valid reason to do so.