I got this error message after log in. I have 8 chars and its happens only for the first char, when the announcement window is open.
EsoUI/Ingame/Skills/SkillsDataManager.lua:1159: attempt to index a nil value
stack traceback:
EsoUI/Ingame/Skills/SkillsDataManager.lua:1159: in function 'ZO_SkillsDataManager:OnFullSystemUpdated'
EsoUI/Ingame/Skills/SkillsDataManager.lua:1077: in function '(anonymous)'
Is this the game or an addon?
When this happen and i open my skill menu the skill bar is empty.

But in the normal view it's filled.
PC EU - PVP - CP 2300+Win 10 Home 64-bit - 32GB - SSD 1000GBIntel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 CPUs), ~3.6GHzNVIDIA GeForce RTX 2080 Ti