diff --git a/.github/workflows/integration-test-cron.yml b/.github/workflows/integration-test-cron.yml
index 8e144d8..d457e56 100644
--- a/.github/workflows/integration-test-cron.yml
+++ b/.github/workflows/integration-test-cron.yml
@@ -217,6 +217,7 @@ jobs:
           cp example.env .env
           echo "NEXTCLOUD_URL=http://localhost:8080" >> .env
           python3 -u ./main_em.py > em_backend_logs 2>&1 &
+          echo $! > ../em_pid.txt       # Save the embedding server process ID (PID)
           python3 -u ./main.py > backend_logs 2>&1 &
           echo $! > ../pid.txt          # Save the process ID (PID)
           sleep 60 # Wait for the backend to get ready
@@ -359,6 +360,13 @@ jobs:
               exit 1
             fi
 
+            # Check if the embedding server is still alive
+            em_alive=$(ps -p $(cat em_pid.txt) -o cmd= | grep -c "main_em.py" || echo "0")
+            if [ "$em_alive" -eq 0 ]; then
+              echo "Error: Context Chat embedding server process is not running. Exiting."
+              exit 1
+            fi
+
             sleep 10
           done
 
diff --git a/.github/workflows/integration-test-file-listener.yml b/.github/workflows/integration-test-file-listener.yml
index 4f4b7ad..2b44524 100644
--- a/.github/workflows/integration-test-file-listener.yml
+++ b/.github/workflows/integration-test-file-listener.yml
@@ -205,6 +205,7 @@ jobs:
           cp example.env .env
           echo "NEXTCLOUD_URL=http://localhost:8080" >> .env
           python3 -u ./main_em.py > em_backend_logs 2>&1 &
+          echo $! > ../em_pid.txt       # Save the embedding server process ID (PID)
           python3 -u ./main.py > backend_logs 2>&1 &
           echo $! > ../pid.txt          # Save the process ID (PID)
           sleep 60 # Wait for the backend to get ready
@@ -350,6 +351,13 @@ jobs:
               exit 1
             fi
 
+            # Check if the embedding server is still alive
+            em_alive=$(ps -p $(cat em_pid.txt) -o cmd= | grep -c "main_em.py" || echo "0")
+            if [ "$em_alive" -eq 0 ]; then
+              echo "Error: Context Chat embedding server process is not running. Exiting."
+              exit 1
+            fi
+
             sleep 10
           done
 
diff --git a/lib/Controller/QueueController.php b/lib/Controller/QueueController.php
index 8161508..f35eaa1 100644
--- a/lib/Controller/QueueController.php
+++ b/lib/Controller/QueueController.php
@@ -18,7 +18,6 @@
 use OCA\ContextChat\Db\QueueFile;
 use OCA\ContextChat\Db\QueueMapper;
 use OCA\ContextChat\Service\ProviderConfigService;
-use OCA\ContextChat\Service\StorageService;
 use OCA\ContextChat\Type\Source;
 use OCP\AppFramework\Http;
 use OCP\AppFramework\Http\Attribute\ApiRoute;
diff --git a/tests/integration/ContentManagerTest.php b/tests/integration/ContentManagerTest.php
index 55aff2a..2e6d8f8 100644
--- a/tests/integration/ContentManagerTest.php
+++ b/tests/integration/ContentManagerTest.php
@@ -24,11 +24,11 @@
 use OCP\AppFramework\Services\IAppConfig;
 use OCP\BackgroundJob\IJobList;
 use OCP\EventDispatcher\IEventDispatcher;
-use OCP\IServerContainer;
 use OCP\Server;
 use PHPUnit\Framework\Attributes\Group;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
+use Psr\Container\ContainerInterface;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\EventDispatcher\EventDispatcher as SymfonyDispatcher;
 
@@ -51,7 +51,7 @@ class ContentManagerTest extends TestCase {
 	private IJobList $jobList;
 	private IEventDispatcher $eventDispatcher;
 	private SymfonyDispatcher $dispatcher;
-	private IServerContainer $serverContainer;
+	private ContainerInterface $serverContainer;
 
 	// private bool $initCalled = false;
 	private static string $providerClass = 'OCA\ContextChat\Tests\ContentProvider';
@@ -67,7 +67,7 @@ public function setUp(): void {
 
 		// new dispatcher for each test
 		$this->dispatcher = new SymfonyDispatcher();
-		$this->serverContainer = Server::get(IServerContainer::class);
+		$this->serverContainer = Server::get(ContainerInterface::class);
 		$this->eventDispatcher = new \OC\EventDispatcher\EventDispatcher(
 			$this->dispatcher,
 			$this->serverContainer,
@@ -90,14 +90,24 @@ public function setUp(): void {
 		// $this->overwriteService(ProviderConfigService::class, $this->providerConfig);
 
 		// using this app's app id to pass the check that the app is enabled for the user
-		$providerObj = new ContentProvider(Application::APP_ID, 'test-provider', function () {
-			// $this->initCalled = true;
-		});
+		$providerObj = new ContentProvider(Application::APP_ID, 'test-provider');
 		$providerClass = get_class($providerObj);
 
-		\OC::$server->registerService($providerClass, function () use ($providerObj) {
-			return $providerObj;
-		});
+		// Register in the app container instead of the server container because since NC 36
+		// registering `OCA\...` services directly in the core container is no longer supported,
+		// see https://github.com/nextcloud/server/pull/64172
+		// A `\OC::$server->registerService()` here would never be seen by the `Server::get($providerClass)`
+		// lookup in registerContentProvider().
+		//
+		// That lookup then falls back to reflection, which cannot build this class because its constructor
+		// takes scalars the container has no way to resolve.
+		//
+		// On PHP >= 8.4 the failure stays hidden (lazy ghosts defer the constructor,
+		// and the resolved value is discarded anyway).
+		\OC::$server->getAppContainerForService($providerClass)
+			->registerService($providerClass, function () use ($providerObj) {
+				return $providerObj;
+			});
 
 		$this->contentManager = new ContentManager(
 			$this->jobList,
@@ -242,7 +252,6 @@ class ContentProvider implements IContentProvider {
 	public function __construct(
 		private string $appId,
 		private string $providerId,
-		private $callback,
 	) {
 	}
 
@@ -259,6 +268,5 @@ public function getItemUrl(string $id): string {
 	}
 
 	public function triggerInitialImport(): void {
-		($this->callback)();
 	}
 }