Getting error in Container.php line 779: Class request does not exist

Hello,

I cloned a repo created by the previous developer at work. It's my first time working on Laravel and I can't for the life of me find out why this error is being triggered. I've ran composer install, composer update, composer self-update. I've tried running a few artisan commands but they will not run. I also tried looking for places where perhaps Illuminate\Http\Request; was not specified. Any help is truly appreciated. This is the error I'm getting:

Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover

In Container.php line 779:
                                
  Class request does not exist  
                                
Script @php artisan package:discover handling the post-autoload-dump event returned with error code 1

These are the log errors:

[2019-03-04 00:30:55] laravel.ERROR: Class request does not exist {"exception":"[object] (ReflectionException(code: -1): Class request does not exist at /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php:779)
[stacktrace]
#0 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(779): ReflectionClass->__construct('request')
#1 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(658): Illuminate\Container\Container->build('request')
#2 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(609): Illuminate\Container\Container->resolve('request', Array)
#3 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(759): Illuminate\Container\Container->make('request', Array)
#4 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(121): Illuminate\Foundation\Application->make('request', Array)
#5 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(731): app('request')
#6 /var/www/html/config/l5-swagger.php(158): request()
#7 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/LoadConfiguration.php(72): require('/var/www/html/c...')
#8 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/LoadConfiguration.php(39): Illuminate\Foundation\Bootstrap\LoadConfiguration->loadConfigurationFiles(Object(Illuminate\Foundation\Application), Object(Illuminate\Config\Repository))
#9 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(211): Illuminate\Foundation\Bootstrap\LoadConfiguration->bootstrap(Object(Illuminate\Foundation\Application))
#10 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(297): Illuminate\Foundation\Application->bootstrapWith(Array)
#11 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(120): Illuminate\Foundation\Console\Kernel->bootstrap()
#12 /var/www/html/app/Console/Kernel.php(47): Illuminate\Foundation\Console\Kernel->handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#13 /var/www/html/artisan(37): App\Console\Kernel->handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#14 {main}
"}

This is the composer.json file:

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": "^7.1.3",
        "fideloper/proxy": "^4.0",
        "jenssegers/agent": "^2.6",
        "juampi92/api-resources": "^1.1",
        "lanin/laravel-api-debugger": "^3.1",
        "laravel/framework": "5.7.*",
        "laravel/passport": "^7.0",
        "laravel/tinker": "^1.0",
        "ramsey/uuid": "^3.8",
        "silber/bouncer": "v1.0.0-rc.4"
    },
    "require-dev": {
        "barryvdh/laravel-ide-helper": "^2.5",
        "beyondcode/laravel-dump-server": "^1.0",
        "darkaonline/l5-swagger": "^5.7",
        "filp/whoops": "^2.0",
        "fzaninotto/faker": "^1.8",
        "mockery/mockery": "^1.0",
        "nunomaduro/collision": "^2.0",
        "phpunit/phpunit": "^7.0"
    },
    "autoload": {
        "files": [
            "app/Support/helpers.php"
        ],
        "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"
        ],
        "post-update-cmd": [
            "Illuminate\Foundation\ComposerScripts::postUpdate",
            "php artisan ide-helper:generate",
            "php artisan ide-helper:meta"
        ]
    },
    "config": {
        "preferred-install": "dist",
        "sort-packages": true,
        "optimize-autoloader": true
    },
    "minimum-stability": "dev",
    "prefer-stable": true
}