diff --git a/backend/src/main/java/de/srsoftware/umbrella/backend/Application.java b/backend/src/main/java/de/srsoftware/umbrella/backend/Application.java
index 6ccbc45..68eceb5 100644
--- a/backend/src/main/java/de/srsoftware/umbrella/backend/Application.java
+++ b/backend/src/main/java/de/srsoftware/umbrella/backend/Application.java
@@ -3,6 +3,7 @@ package de.srsoftware.umbrella.backend;
 
 import static de.srsoftware.umbrella.core.Constants.*;
 import static de.srsoftware.umbrella.core.Util.mapLogLevel;
+import static java.lang.System.Logger.Level.ERROR;
 import static java.lang.System.Logger.Level.INFO;
 
 import com.sun.net.httpserver.HttpServer;
@@ -58,28 +59,31 @@ public class Application {
 		config.get("umbrella.plantuml").map(Object::toString).map(File::new).filter(File::exists).ifPresent(Util::setPlantUmlJar);
 
 		var server            = HttpServer.create(new InetSocketAddress(port), 0);
-
-		new Translations().bindPath("/api/translations").on(server);
-		new MessageSystem(config);
-		new UserModule(config).bindPath("/api/user").on(server);
-		new TagModule(config).bindPath("/api/tags").on(server);
-		new BookmarkApi(config).bindPath("/api/bookmark").on(server);
-		new CompanyModule(config).bindPath("/api/company").on(server);
-		new CompanyLegacy(config).bindPath("/legacy/company").on(server);
-		new DocumentApi(config).bindPath("/api/document").on(server);
-		new ItemApi(config).bindPath("/api/items").on(server);
-		new UserLegacy(config).bindPath("/legacy/user").on(server);
-		new NotesLegacy(config).bindPath("/legacy/notes").on(server);
-		new MarkdownApi().bindPath("/api/markdown").on(server);
-		new NoteModule(config).bindPath("/api/notes").on(server);
-		new ProjectModule(config).bindPath("/api/project").on(server);
-		new ProjectLegacy(config).bindPath("/legacy/project").on(server);
-		new TaskModule(config).bindPath("/api/task").on(server);
-		new TaskLegacy().bindPath("/legacy/task").on(server);
-		new TimeModule(config).bindPath("/api/time").on(server);
-		new WebHandler().bindPath("/").on(server);
-		new WikiModule(config).bindPath("/api/wiki").on(server);
-
+		try {
+			new Translations().bindPath("/api/translations").on(server);
+			new MessageSystem(config);
+			new UserModule(config).bindPath("/api/user").on(server);
+			new TagModule(config).bindPath("/api/tags").on(server);
+			new BookmarkApi(config).bindPath("/api/bookmark").on(server);
+			new CompanyModule(config).bindPath("/api/company").on(server);
+			new CompanyLegacy(config).bindPath("/legacy/company").on(server);
+			new DocumentApi(config).bindPath("/api/document").on(server);
+			new ItemApi(config).bindPath("/api/items").on(server);
+			new UserLegacy(config).bindPath("/legacy/user").on(server);
+			new NotesLegacy(config).bindPath("/legacy/notes").on(server);
+			new MarkdownApi().bindPath("/api/markdown").on(server);
+			new NoteModule(config).bindPath("/api/notes").on(server);
+			new ProjectModule(config).bindPath("/api/project").on(server);
+			new ProjectLegacy(config).bindPath("/legacy/project").on(server);
+			new TaskModule(config).bindPath("/api/task").on(server);
+			new TaskLegacy().bindPath("/legacy/task").on(server);
+			new TimeModule(config).bindPath("/api/time").on(server);
+			new WebHandler().bindPath("/").on(server);
+			new WikiModule(config).bindPath("/api/wiki").on(server);
+		} catch (Exception e) {
+			LOG.log(ERROR,"Startup failed",e);
+			System.exit(-1);
+		}
 		server.setExecutor(Executors.newFixedThreadPool(threads));
 		server.start();
 		LOG.log(INFO,"Started web server at port {0}",port);
diff --git a/task/src/main/java/de/srsoftware/umbrella/task/TaskModule.java b/task/src/main/java/de/srsoftware/umbrella/task/TaskModule.java
index c53f0c8..bf4bf4f 100644
--- a/task/src/main/java/de/srsoftware/umbrella/task/TaskModule.java
+++ b/task/src/main/java/de/srsoftware/umbrella/task/TaskModule.java
@@ -13,7 +13,6 @@ import static de.srsoftware.umbrella.core.exceptions.UmbrellaException.*;
 import static de.srsoftware.umbrella.core.model.Permission.*;
 import static de.srsoftware.umbrella.project.Constants.PERMISSIONS;
 import static de.srsoftware.umbrella.task.Constants.*;
-import static java.lang.System.Logger.Level.DEBUG;
 import static java.lang.System.Logger.Level.WARNING;
 
 import com.sun.net.httpserver.HttpExchange;
diff --git a/time/src/main/java/de/srsoftware/umbrella/time/TimeModule.java b/time/src/main/java/de/srsoftware/umbrella/time/TimeModule.java
index a964216..1d01ab4 100644
--- a/time/src/main/java/de/srsoftware/umbrella/time/TimeModule.java
+++ b/time/src/main/java/de/srsoftware/umbrella/time/TimeModule.java
@@ -10,7 +10,6 @@ import static de.srsoftware.umbrella.core.exceptions.UmbrellaException.*;
 import static de.srsoftware.umbrella.core.model.Time.State.Open;
 import static de.srsoftware.umbrella.core.model.Time.State.Started;
 import static de.srsoftware.umbrella.time.Constants.*;
-import static java.util.stream.Collectors.toSet;
 
 import com.sun.net.httpserver.HttpExchange;
 import de.srsoftware.configuration.Configuration;
diff --git a/user/src/main/java/de/srsoftware/umbrella/user/sqlite/SqliteDB.java b/user/src/main/java/de/srsoftware/umbrella/user/sqlite/SqliteDB.java
index dd84370..a61266d 100644
--- a/user/src/main/java/de/srsoftware/umbrella/user/sqlite/SqliteDB.java
+++ b/user/src/main/java/de/srsoftware/umbrella/user/sqlite/SqliteDB.java
@@ -34,13 +34,10 @@ import java.util.*;
 public class SqliteDB extends BaseDb implements LoginServiceDb, UserDb {
 	private static final System.Logger LOG = System.getLogger(SqliteDB.class.getSimpleName());
 
-	private static final int INITIAL_DB_VERSION = 4;
-
 	public SqliteDB(Connection conn){
 		super(conn);
 	}
 
-
 	private void createLoginServiceTables() {
 		var createTable = """
 CREATE TABLE IF NOT EXISTS {0} (