Update OrmExtension.php

src/DI/OrmExtension.php

@@ -98,7 +98,7 @@ public function getConfigSchema(): Schema
 					'connection' => Expect::string()->required(),
 					'entityManagerDecoratorClass' => Expect::string()->assert(fn ($input) => is_a($input, EntityManagerDecorator::class, true), 'EntityManager decorator class must be subclass of ' . EntityManagerDecorator::class),
 					'configurationClass' => Expect::string(Configuration::class)->assert(fn ($input) => is_a($input, Configuration::class, true), 'Configuration class must be subclass of ' . Configuration::class),
-					'proxyDir' => Expect::string()->default($proxyDir)->before(fn (mixed $v) => $v ?? $proxyDir)->assert(fn (mixed $v) => $v === null || $v === '', 'proxyDir must be filled'),
+					'proxyDir' => Expect::string()->default($proxyDir)->before(fn (mixed $v) => $v ?? $proxyDir)->assert(fn (mixed $v) => !($v === null || $v === ''), 'proxyDir must be filled'),
 					'autoGenerateProxyClasses' => Expect::anyOf(Expect::int(), Expect::bool(), Expect::type(Statement::class))->default($autoGenerateProxy),
 					'proxyNamespace' => Expect::string('Nettrine\Proxy')->nullable(),
 					'metadataDriverImpl' => Expect::string(),