diff --git a/src/Doctrine/DoctrineDiagnoseExtension.php b/src/Doctrine/DoctrineDiagnoseExtension.php
index 0502c736..7e9b91cc 100644
--- a/src/Doctrine/DoctrineDiagnoseExtension.php
+++ b/src/Doctrine/DoctrineDiagnoseExtension.php
@@ -30,12 +30,22 @@ public function __construct(
 
 	public function print(Output $output): void
 	{
+		$objectManager = $this->objectMetadataResolver->getObjectManager();
+
 		$output->writeLineFormatted(sprintf(
 			'<info>Doctrine\'s objectManagerLoader:</info> %s',
 			$this->objectMetadataResolver->hasObjectManagerLoader() ? 'In use' : 'No',
 		));
 
-		$objectManager = $this->objectMetadataResolver->getObjectManager();
+		if ($this->objectMetadataResolver->getLastError() !== null) {
+			$output->writeLineFormatted(sprintf(
+				'<error>Doctrine\'s objectManagerLoader error:</error> %s',
+				$this->objectMetadataResolver->getLastError()->getMessage(),
+			));
+
+			$output->writeLineFormatted('');
+		}
+
 		if ($objectManager instanceof EntityManagerInterface) {
 			$connection = $objectManager->getConnection();
 			$driver = $this->driverDetector->detect($connection);
diff --git a/src/Type/Doctrine/ObjectMetadataResolver.php b/src/Type/Doctrine/ObjectMetadataResolver.php
index 054e9a57..5408b548 100644
--- a/src/Type/Doctrine/ObjectMetadataResolver.php
+++ b/src/Type/Doctrine/ObjectMetadataResolver.php
@@ -9,6 +9,7 @@
 use PHPStan\Doctrine\Mapping\ClassMetadataFactory;
 use PHPStan\ShouldNotHappenException;
 use ReflectionException;
+use Throwable;
 use function class_exists;
 use function is_file;
 use function is_readable;
@@ -26,6 +27,8 @@ final class ObjectMetadataResolver
 
 	private string $tmpDir;
 
+	private ?Throwable $lastError = null;
+
 	public function __construct(
 		?string $objectManagerLoader,
 		string $tmpDir
@@ -89,6 +92,11 @@ public function isTransient(string $className): bool
 		}
 	}
 
+	public function getLastError(): ?Throwable
+	{
+		return $this->lastError;
+	}
+
 	private function getMetadataFactory(): ?ClassMetadataFactory
 	{
 		if ($this->metadataFactory !== null) {
@@ -160,7 +168,13 @@ private function loadObjectManager(string $objectManagerLoader): ?ObjectManager
 			));
 		}
 
-		return require $objectManagerLoader;
+		try {
+			return require $objectManagerLoader;
+		} catch (Throwable $error) {
+			$this->lastError = $error;
+
+			return null;
+		}
 	}
 
 }
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