Everytime when i was reloading the page, it will pop up such text in the following. Even if I receive the loot, it does so too. And if i didn't receive any mystic ketstone in my bag, it would disappear

|Hkeystone
158923
250
4
9
6
0
0[xxxxx：xxxxxx (4)] #dungeonname
nil
nil
nil
nil
nil
nil
nil
nil
nil
nil
nil
nil
|Hkeystone
158923
250
4
9
6
0
0[xxxxx：xxxxxx (4)] #dungeonname
nil
nil
nil
nil
nil
nil
nil
nil
nil
nil
nil
nil

Seems like you need to disable debug mode

@LiangYuxuan is correct, that is debug text I added when I was first trying to figure out how to get keystone tracking to work.
19206fd
You can uncheck the debug option in in the config to remove this.