(DataAccessObject.java:00)     at com.DataAccessObjects.DataAccessObject.updateDb(DataAccessObject.java:00)     at com.DataAccessObjects.AuthTokenDao.createTable(AuthTokenDao.java:00)     at com.Services.Service.newDaosAtDb(Service.java:00)     at com.Services.ClearService.<init>(ClearService.java:00)     at com.Handlers.ClearHandler.<init>(ClearHandler.java:00)     at com.Server.run(Server.java:00)     at com.Server.main(Server.java:00) Exception in thread "main" java.lang.NullPointerException     at com.DataAccessObjects.DataAccessObject.updateDb(DataAccessObject.java:00)     at com.DataAccessObjects.AuthTokenDao.createTable(AuthTokenDao.java:00)     at com.Services.Service.newDaosAtDb(Service.java:00)     at com.Services.ClearService.<init>(ClearService.java:00)     at com.Handlers.ClearHandler.<init>(ClearHandler.java:00)     at com.Server.run(Server.java:00)     at com.Server.main(Server.java:00) 