Pointshop 2 Bug

Hello Guys, i just started my own server because i enjoy doing my own things. After hours i managed to install Pointshop 2 on my server, but after a few Rounds the Pointshop Window was very buggy. Now I cant interact with the menu and its stuck in the top left corner. Also i cant close it.

In the console there is this message:

[ERROR] addons/pointshop2/lua/ps2/client/icons/cl_dcsgoitemicon.lua:29: attempt to call field 'RequestIcon' (a nil value)
1. SetItemClass - addons/pointshop2/lua/ps2/client/icons/cl_dcsgoitemicon.lua:29
2. SetItemClass - addons/pointshop2/lua/ps2/client/cl_dpointshophaticon.lua:29
3. DoPopulate - addons/pointshop2/lua/ps2/client/tabs/management_tab/manage_items/content/cl_pointshop2content.lua:118
4. PopulateWithExistingCategories - addons/pointshop2/lua/ps2/client/tabs/management_tab/manage_items/content/cl_pointshop2content.lua:260
5. fn - addons/pointshop2/lua/ps2/client/tabs/management_tab/manage_items/content/cl_pointshop2content.lua:348
6. Call - addons/ulib/lua/ulib/shared/hook.lua:109
7. CallPopulateHook - addons/pointshop2/lua/ps2/client/tabs/management_tab/manage_items/dpointshopcontentpanel.lua:27
8. Init - addons/pointshop2/lua/ps2/client/tabs/management_tab/cl_dpointshopmanagementtab_items.lua:15
9. Create - lua/includes/extensions/client/panel/scriptedpanels.lua:37
10. Init - addons/pointshop2/lua/ps2/client/tabs/management_tab/cl_dpointshopmanagementtab.lua:19
11. Create - lua/includes/extensions/client/panel/scriptedpanels.lua:37
12. Init - addons/pointshop2/lua/ps2/client/cl_dpointshopframe.lua:112
13. Create - lua/includes/extensions/client/panel/scriptedpanels.lua:37
14. OpenMenu - addons/pointshop2/lua/ps2/client/cl_0_pointshop2.lua:7
15. ToggleMenu - addons/pointshop2/lua/ps2/client/cl_0_pointshop2.lua:69
16. unknown - addons/pointshop2/lua/ps2/client/cl_pointshop2view.lua:80



Any ideas what to do?

Cheers