ESO bug ? i dont see mention of an addon

[Anceane]

EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:2126: operator - is not supported for number - nil
stack traceback:
	EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:2126: in function 'CompareEntries'
	EsoUI/Libraries/Globals/globalapi.lua:57: in function 'zo_binarysearch'
	EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:2134: in function 'FindStartPoint'
	EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:2166: in function 'ZO_ScrollList_UpdateScroll'
	EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:2287: in function 'ZO_ScrollList_MoveWindow'
	ZO_KeybindingsListScrollBar_ValueChanged:3: in function '(main chunk)'
	[C]: in function 'SetValue'
	EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:2258: in function 'ZO_ScrollList_ResetToTop'
	EsoUI/Ingame/Inventory/Inventory.lua:1118: in function 'ZO_InventoryManager:ChangeFilter'
	(tail call): ?
	EsoUI/Ingame/Inventory/Inventory.lua:63: in function 'HandleTabSwitch'
	EsoUI/Libraries/ZO_MenuBar/ZO_MenuBar.lua:284: in function 'MenuBarButton:Release'
	EsoUI/Libraries/ZO_MenuBar/ZO_MenuBar.lua:636: in function 'ZO_MenuBarButtonTemplate_OnMouseUp'
	ZO_MainMenuCategoryBarButton1_MouseUp:3: in function '(main chunk)'

Each time i receive a reward container for the Psijic quest, this bug pop, anyone have any idea ?