Psalm Level 6: 2 of 9: InvalidReturnType - src/Command/Fixture/AddCommand.php:53:81 - The declared return type 'int' for App\Command\Fixture\AddCommand::execute is incorrect, got 'int|non-falsy-string' (see https://psalm.dev/011) protected function execute(InputInterface $input, OutputInterface $output): int

[rossaddison]

By adjusting the psalm.xml document to:

<?xml version="1.0"?>
<psalm
    errorLevel="6"        <------------------------------------------------------- change level 7 to 6
    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" />
        <file name="public/index.php"/>
        <file name="yii"/>
        <file name="autoload.php"/>
    </projectFiles>
</psalm>

... the following error occurs.

[vjik]

Closed favor in #538