psalm.xml

<?xml version="1.0"?>
<psalm
        errorLevel="8"
        hideExternalErrors="true"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="https://getpsalm.org/schema/config"
        xsi:schemaLocation="https://getpsalm.org/schema/config https://getpsalm.org/schema/config"
>
    <projectFiles>
        <directory name="src"/>
    </projectFiles>

    <issueHandlers>
        <InternalMethod>
            <errorLevel type="suppress">
                <referencedMethod name="Contao\CoreBundle\Framework\ContaoFramework::getAdapter"/>
                <referencedMethod name="Contao\CoreBundle\Framework\Adapter::__call"/>
            </errorLevel>
        </InternalMethod>

        <DeprecatedMethod>
            <errorLevel type="suppress">
                <referencedMethod name="Doctrine\DBAL\Connection::getSchemaManager"/>
                <referencedMethod name="Doctrine\DBAL\Query\QueryBuilder::execute"/>
            </errorLevel>
        </DeprecatedMethod>
    </issueHandlers>

    <universalObjectCrates>
        <class name="Contao\ContentModel"/>
        <class name="Contao\Database\Result"/>
    </universalObjectCrates>
</psalm>