bugfix

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

user/src/main/java/de/srsoftware/umbrella/user/UserModule.java

@@ -146,9 +146,13 @@ public class UserModule extends BaseHandler implements UserService {
 	}
 
 	public Optional<UmbrellaUser> loadUser(Optional<Token> sessionToken) throws UmbrellaException {
+		try {
 			if (sessionToken.isEmpty()) return empty();
 			var session = users.load(sessionToken.get());
 			return Optional.of(users.load(session));
+		} catch (UmbrellaException e) {
+			return empty();
+		}
 	}
 
 	public Optional<UmbrellaUser> loadUser(HttpExchange ex) throws UmbrellaException {