This patch is not for 18.104.22.168p8, so don't apply it as it will break your server. The issue handled in this patch has been solved in 22.214.171.124p8 so no patch is required. I just tested the aps package list update here and it works fine in 126.96.36.199p8. Do you get any errors on the screen or in the ispconfig system log in the monitor? Thats possible as it may contain old package versions.