bug

我正常刷图打tie'c城寨，boos打死了，东西也拿到了，我继续刷里面祭祀图的时候卡卡住了，被逼下线了，可我上线后我背包里面的东西全没了，我捡到的那个写物品全没了？
为什么会这样？？？谁能给我个解释？
I was playing the tie'c fortress normally, the boss was killed, and the items were obtained. When I continued to play the sacrifice map, it got stuck and I was forced to log off. But when I logged on, everything in my backpack was gone, and the items I picked up were all gone?
Why is this happening? ? ? Can anyone give me an explanation?