In the module, you are referencing LocalPlayer. As you are requiring this from a server script, it is not going to have a valid variable, as LocalPlayer only exists on the client.
I have many barrel givers and it have maximum barrel limit. So i have different barrels. Module make formula of summa of all barrels. And sent this formula to script and he checks, do player dont reached his inventory limit. But my script is server sided and idk how to get player in module script.
Then in your server script, set the player value and Inventory, for example:
local barreldata= require(game.ReplicatedStorage:WaitForChild("BarrelsData"))
local function getbarreldata(player)
local inventory = player:FindFirstChild("Inventory")
local barrels = barreldata["Barrels"]
local cherry = inventory:FindFirstChild(barrels ["Cherry"])
end