https://warcraft.wiki.gg/wiki/Patch_11.0.0/API_changes

SmexyMats\main\Smexy_Core.lua
Line 80

• GetItemInfo(item) deprecated
  https://warcraft.wiki.gg/wiki/API_C_Item.GetItemInfo

- GetItemInfo(item)
+ C_Item.GetItemInfo(item)

• GetTradeSkillReagentItemLink
  Line 206 -210
  maybe with this add if client is classic show classic , if TWW then C_TradeSkillUI.GetRecipeReagentItemLink
  https://warcraft.wiki.gg/wiki/API_C_TradeSkillUI.GetRecipeReagentItemLink
  its not show as deprecated

- GetTradeSkillReagentItemLink
+C_TradeSkillUI.GetRecipeReagentItemLink

#6 (comment)