At the moment, if you choose PHP, you can't use PHP7 because of the outdated dependencies.
PHP Fatal error: Cannot use PhpParser\Node\Scalar\String as String because 'String' is a special class name in vendor/classpreloader/classpreloader/src/Parser/DirVisitor.php on line 8
At the moment, if you choose PHP, you can't use PHP7 because of the outdated dependencies.