Composer v2.3.3 have a error in Downloader.php

[Axent96]

Error message on "composer install":

In Downloader.php line 170:

Undefined index: manifests

It heaping only on first time & if we rerun composer install then it say nothing to install & work well

My composer.json:

{
    "name": "test/test-service",
    "description": "1.0.0",
    "type": "project",
    "license": "proprietary",
    "require": {
        "php": "^7.1.3",
        "ext-iconv": "*",
        "symfony/maker-bundle": "~1.5.0",
        "doctrine/common": ">=2.8.1 <=2.8.1",
        "doctrine/doctrine-bundle": "~1.9.1",
        "doctrine/doctrine-fixtures-bundle": "~3.0.2",
        "doctrine/orm": "~2.6.1",
        "dunglas/doctrine-json-odm": "~1.0.1",
        "eightpoints/guzzle-bundle": "~7.6.1",
        "jms/serializer-bundle": "~3.4.1",
        "mark-gerarts/automapper-plus-bundle": "~1.1.0",
        "sensio/framework-extra-bundle": "~5.1.6",
        "symfony/asset": "~4.4.0",
        "symfony/browser-kit": "~4.4.0",
        "symfony/console": "~4.4.0",
        "symfony/flex": "~1.9.8",
        "symfony/framework-bundle": "~4.4.0",
        "symfony/monolog-bundle": "~3.5.0",
        "symfony/property-access": "~4.4.0",
        "symfony/yaml": "~4.4.0",
        "syslogic/doctrine-json-functions": "~2.1.0"
    },
    "require-dev": {
        "phpstan/phpstan": "^0.12.83",
        "symfony/debug": "~4.4.0",
        "symfony/dotenv": "~4.4.0",
        "symfony/phpunit-bridge": "~4.4.3",
        "symfony/var-dumper": "~4.4.0"
    },
    "config": {
        "preferred-install": {
            "*": "dist"
        },
        "sort-packages": true,
        "process-timeout": 800
    },
    "autoload": {
        "psr-4": {
            "App\\": "src/App"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "App\\Tests\\": "tests/"
        }
    },
    "replace": {
        "symfony/polyfill-iconv": "*",
        "symfony/polyfill-php71": "*",
        "symfony/polyfill-php70": "*",
        "symfony/polyfill-php56": "*"
    },
    "scripts": {
        "auto-scripts": {
            "cache:clear": "symfony-cmd",
            "assets:install --symlink --relative %PUBLIC_DIR%": "symfony-cmd"
        },
        "post-install-cmd": [
            "@auto-scripts"
        ],
        "post-update-cmd": [
            "@auto-scripts"
        ],
        "update-phars": [
            "@php composer self-update"
        ],
        "test": [
            "echo 'Run test in product-service'",
            "composer validate --strict",
            "vendor/bin/phpstan.phar analyze --level=4 --configuration=.php-stan.neon src"
        ]
    },
    "conflict": {
        "symfony/symfony": "*"
    },
    "extra": {
        "symfony": {
            "id": "01C8Z9QWGJJ3RPXPW6WCEKFQBK",
            "allow-contrib": true
        }
    }
}

Output of composer diagnose:

Checking composer.json: OK
Checking platform settings: OK
Checking git settings: OK
Checking http connectivity to packagist: OK
Checking https connectivity to packagist: OK
Checking github.com rate limit: OK
Checking disk free space: OK
OK
Checking composer version: OK
Composer version: 2.3.3
PHP version: 7.2.4
PHP binary path: /usr/local/bin/php
OpenSSL version: OpenSSL 1.1.1l  24 Aug 2021
cURL version: 7.79.1 libz 1.2.11 ssl OpenSSL/1.1.1n
zip: extension present, unzip present, 7-Zip not available

[colinodell]

It looks like you're using an older version of Symfony Flex - see symfony/flex#890 for an explanation of the issue and how to fix it.

[Seldaek]

Yes.. also as usual (and as you'd have done if you followed the issue template..) please submit a full stack trace, that would have highlighted the problem was not in Composer directly.