psalm.xml

<?xml version="1.0"?>
<psalm
        errorLevel="3"
        resolveFromConfigFile="true"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="https://getpsalm.org/schema/config"
        xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
>
    <projectFiles>
        <directory name="src"/>
        <ignoreFiles>
            <directory name="vendor"/>
        </ignoreFiles>
    </projectFiles>
    <plugins>
        <pluginClass class="Psalm\SymfonyPsalmPlugin\Plugin">
            <containerXml>var/cache/dev/App_KernelDevDebugContainer.xml</containerXml>
        </pluginClass>
    </plugins>
    <fileExtensions>
        <extension name=".php"/>
        <extension name=".twig" checker="./vendor/psalm/plugin-symfony/src/Twig/TemplateFileAnalyzer.php"/>
    </fileExtensions>
</psalm>