composer: proc_open(NUL): failed to open stream: No such file or directory

Windows 10 Composer 1.8.5 PHP 7.3.1 (cli) (built: Jan 9 2019 22:43:14) ( ZTS MSVC15 (Visual C++ 2017) x86 ) Copyright © 1997-2018 The PHP Group Zend Engine v3.3.1, Copyright © 1998-2018 Zend Technologies

Trying to run composer update gave me the error proc_open(NUL): failed to open stream: No such file or directory

I’ve tried all the fixes previously mentioned for this error but nothing works

I’ve tried from cmd and power shell. At a loss now.

My composer.json:

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": [
        "framework",
        "laravel"
    ],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": "^7.1.3",
        "ext-json": "*",
        "beyondcode/laravel-websockets": "^1.0",
        "calcinai/xero-php": "^1.8",
        "doctrine/dbal": "^2.8",
        "fideloper/proxy": "^4.0",
        "guzzlehttp/guzzle": "^6.3",
        "laravel/framework": "5.8.*",
        "laravel/tinker": "^1.0",
        "mistic100/randomcolor": "^1.0",
        "musonza/chat": "^3.2",
        "pusher/pusher-php-server": "^3.2",
        "yajra/laravel-datatables": "^1.4"
    },
    "require-dev": {
        "barryvdh/laravel-debugbar": "^3.2",
        "barryvdh/laravel-ide-helper": "^2.4",
        "beyondcode/laravel-dump-server": "^1.0",
        "filp/whoops": "^2.0",
        "fzaninotto/faker": "^1.4",
        "mockery/mockery": "^1.0",
        "nunomaduro/collision": "^2.0",
        "phpunit/phpunit": "^7.0"
    },
    "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"
        ],
        "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
}

Output of composer diagnose:

[ErrorException]
  proc_open(NUL): failed to open stream: No such file or directory

When I run this command:

composer self -v

I get the following output:

self -v


  [ErrorException]
  proc_open(NUL): failed to open stream: No such file or directory


Exception trace:
 () at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/symfony/process/Process.php:285
 Composer\Util\ErrorHandler::handle() at n/a:n/a
 proc_open() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/symfony/process/Process.php:285
 Symfony\Component\Process\Process->start() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/symfony/process/Process.php:196
 Symfony\Component\Process\Process->run() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Util/ProcessExecutor.php:74
 Composer\Util\ProcessExecutor->execute() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Package/Version/VersionGuesser.php:107
 Composer\Package\Version\VersionGuesser->guessGitVersion() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Package/Version/VersionGuesser.php:67
 Composer\Package\Version\VersionGuesser->guessVersion() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Package/Loader/RootPackageLoader.php:88
 Composer\Package\Loader\RootPackageLoader->load() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Factory.php:351
 Composer\Factory->createComposer() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Factory.php:576
 Composer\Factory::create() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Console/Application.php:345
 Composer\Console\Application->getComposer() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Console/Application.php:458
 Composer\Console\Application->getPluginCommands() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Console/Application.php:156
 Composer\Console\Application->doRun() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/symfony/console/Application.php:117
 Symfony\Component\Console\Application->run() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Console/Application.php:104
 Composer\Console\Application->run() at phar://C:/ProgramData/ComposerSetup/bin/composer.phar/bin/composer:61
 require() at C:\ProgramData\ComposerSetup\bin\composer.phar:24

And I expected this to happen: