从3.3更新到3.4时，未定义的类常量IGNORE_ON_UNINITIALIZED_REFERENCE

Question

我目前正在尝试将Symfony 3.3更新为最新的Symfony 3.4（将在支持耗尽之前将其移植到Symfony 4，但没有时间重写系统）和PHP 7。由于PHP 7.3似乎不太适用于3.4，所以我决定暂时继续使用PHP 7.2。

我更新了作曲家。json，运行composer安装（并使用依赖项更新）并清除缓存。然而，在composer内部的一切工作都完美无缺之后，我尝试访问系统，并收到以下消息：

致命错误：未捕获错误：在E:\XAMPP7\u 2\htdocs\wsm rando\vendor\symfony\symfony\src\symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\CachePoolPass中未定义的类常量“忽略\u对\u未初始化的\u引用”。php:93堆栈跟踪：#0 E:\XAMPP7#2\htdocs\wsm rando\vendor\symfony\symfony\src\symfony\Component\DependencyInjection\Compiler\Compiler。php（141）：Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\CachePoolPass-

有没有想过我该怎么解决这个问题？我确信我安装了一个错误的软件包或其他东西。这是作曲家。json供参考：

{
    "name": "symfony/framework-standard-edition",
    "license": "MIT",
    "type": "project",
    "description": "The \"Symfony Standard Edition\" distribution",
    "autoload": {
        "psr-0": { "": "src/", "SymfonyStandard": "app/" }
    },
    "require": {
        "php": ">=5.5.9",
        "symfony/symfony": "3.4.*",
        "doctrine/orm": "^2.5",
        "doctrine/doctrine-bundle": "^1.6",
        "doctrine/doctrine-cache-bundle": "^1.2",
        "symfony/swiftmailer-bundle": "~2.3",
        "symfony/monolog-bundle": "^3.1",
        "sensio/distribution-bundle": "^5.0",
        "sensio/framework-extra-bundle": "^3.0.2",
        "incenteev/composer-parameter-handler": "^2.0",
        "twig/extensions": "~1.0",
        "symfony/assetic-bundle": "~2.3",
    "faceleg/html5lib-php": "dev-master",
        "smalot/pdfparser": "*",
        "seostats/seostats": "dev-master",
        "nategood/httpful": "*",
        "twbs/bootstrap": "*",
        "friendsofsymfony/user-bundle": "2.0.*",
        "phpoffice/phpspreadsheet": "^1.1",
      "ext-json": "*"
    },
    "require-dev": {
        "sensio/generator-bundle": "^3.0"
    },
    "scripts": {
        "post-root-package-install": [
            "SymfonyStandard\\Composer::hookRootPackageInstall"
        ],
        "post-install-cmd": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles"
        ],
        "post-update-cmd": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles"
        ]
    },
    "config": {
        "bin-dir": "bin"
    },
    "extra": {
        "symfony-app-dir": "app",
        "symfony-web-dir": "web",
        "symfony-var-dir": "var",
        "symfony-bin-dir": "bin",
        "incenteev-parameters": {
            "file": "app/config/parameters.yml"
        },
        "branch-alias": {
            "dev-master": "2.5-dev"
        }
    }
}

Answer 1

我在Symfony开发人员Slack小组的帮助下解决了这个问题。事实证明，确实设置了常量，但是由于某些错误的缓存，它没有包含在运行时中。

要解决此问题，我必须手动删除缓存/prod和缓存/dev文件夹，而不是使用bin/控制台缓存：清除命令。