i messed up at work tonight

hey everyone i got a confession to make i was working late shift last night at the warehouse and something pretty dumb happened. so there's this guy jack, he works nights too and we kinda joke around but dont really hang out much. anyway one of our tasks is sorting packages super fast and counting them right, well i thought i counted everything right and told jack the numbers but it turns out i missed a whole box and now they're saying that could cost us big since its like a huge order for an important client or something. im not sure what will happen to me but i feel so stupid making such a rookie mistake especially when im supposed to be leading this section sometimes. really kicking myself over this one.