2018-04-09 17:50:41.566 [http-server-pool-1]  Servlet.service()                    FINE:     exception processing request
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
        at java.util.ArrayList.rangeCheck(ArrayList.java:653)
        at java.util.ArrayList.get(ArrayList.java:429)
        at tigase.db.AuthRepository$DefaultCredentials.getFirst(AuthRepository.java:298)
        at tigase.http.ServiceImpl.checkCredentials(ServiceImpl.groovy:93)
        at tigase.http.java.DummyServletRequest.getUserPrincipal(DummyServletRequest.java:407)
        at tigase.http.modules.admin.Servlet.processRequest(Servlet.java:123)
        at tigase.http.modules.admin.Servlet.service(Servlet.java:86)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at tigase.http.java.RequestHandler.handle(RequestHandler.java:123)
        at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79)
        at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:83)
        at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:82)
        at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:675)
        at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79)
        at sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:647)
        at tigase.http.java.JavaStandaloneHttpServer$ExecutorWithTimeout.lambda$0(JavaStandaloneHttpServer.java:171)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)