Use the static factory method instead of global factory function.
-factory(User::class);
+User::factory();Configure your rector.php:
<?php
use RectorLaravel\Rector\FuncCall\FactoryFuncCallToStaticCallRector;
use Rector\Config\RectorConfig;
return RectorConfig::configure()
->withRules([
FactoryFuncCallToStaticCallRector::class,
]);
