Status NULL. RB108106654CN

Hi i'm wating for mi package and the status tracking is NULL, what means??.

item No. Year Status Location Destination Country Date
RB108106654CN 2013 Collection 31005300 AR 20130510 1310
RB108106654CN 2013 Waiting for transit airline Space 31002400 AR 20130516 1423
RB108106654CN 2013 Dispatching 31002400 AR 20130516 1443
RB108106654CN 2013 Departure from China Beijing AR 20130524 0953
RB108106654CN 2013 NULL PEK AR 20130525 0441

Thanks!