shop packet error

[JinxTheLux 2]

SHOP_HOST_ITEM_MAX_NUM

When I do 80, I get a packet error. When I do 70, it gets fixed. Do I have a limit? this is the first time i am encountering such a problem, i have even done 120 before, i did not have any problems i checked all the packets i did not encounter any problem i have been dealing with this interesting problem for days and i am writing here as a last resort as i am not able to produce a solution i am waiting for your help. Thanks.

client error;

0901 22:48:58168 ::Phase Game does not handle this header(header:38, last:115, 38)

The error happens when I click npc a few times.