Laravel: Error "Target class [request] does not exist" after cloning project and running composer install

I recently cloned a Laravel project from a Git repository that was previously worked on by another developer. After successfully running composer install, I encountered the following warning and error:

Package maximebf/debugbar is abandoned, you should avoid using it. Use php-debugbar/php-debugbar instead.
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi

In Container.php line 879:
  Target class [request] does not exist.

In Container.php line 877:
  Class request does not exist.

I also get the same error when I try to run php artisan serve.

Steps I took:

1. Cloned the repository

2. Ran composer install (no other changes made)

3. Tried php artisan serve, but the same "Class request does not exist" error appears

Composer.json

{
    "name": "financialplugins/stake",
    "description": "PowerGames - online casino gaming platform.",
    "keywords": ["PowerGames", "casino", "games"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": "^7.3.0",
        "ext-bcmath": "*",
        "ext-gmp": "*",
        "ext-json": "*",
        "ext-zip": "*",
        "barryvdh/laravel-ide-helper": "2.8.2",
        "enlightn/enlightn": "^1.14",
        "fideloper/proxy": "^4.0",
        "fruitcake/laravel-cors": "^1.0",
        "laravel/framework": "^8.0",
        "laravel/helpers": "^1.4",
        "laravel/sanctum": "^2.0",
        "laravel/socialite": "^5.0",
        "laravel/tinker": "^2.0",
        "laravel/ui": "^3.0",
        "nao-pon/flysystem-google-drive": "~1.1",
        "pusher/pusher-php-server": "^4.1",
        "sentry/sentry-laravel": "^2.4",
        "spatie/flysystem-dropbox": "^1.2",
        "ext-curl": "*",
        "guzzlehttp/guzzle": "^7.0.1"
    },
    "require-dev": {
        "barryvdh/laravel-debugbar": "^3.5",
        "beyondcode/laravel-dump-server": "^1.0",
        "doctrine/dbal": "^2.9",
        "facade/ignition": "^2.3.6",
        "fzaninotto/faker": "^1.4",
        "mockery/mockery": "^1.0",
        "nunomaduro/collision": "^5.0",
        "phpunit/phpunit": "^9.0"
    },
    "config": {
        "optimize-autoloader": true,
        "preferred-install": "dist",
        "sort-packages": true
    },
    "extra": {
        "laravel": {
            "dont-discover": [
                "barryvdh/laravel-debugbar"
            ]
        }
    },
    "autoload": {
        "files": [
            "app/Helpers/Helpers.php"
        ],
        "psr-4": {
            "App\\": "app/"
        },
        "classmap": [
            "database/seeds",
            "database/factories"
        ]
    },
    "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",
            "@php artisan jwt:secret --force --ansi"
        ]
    }
}

Is it possible that there's a misconfigured binding or the service container is trying to resolve a class alias that doesn’t exist? Any guidance would be really appreciated.