Clients can not put food items in Wilson's beard.

function params.beard_sack_1.itemtestfn(container, item, slot)
    if slot and slot ~= 1 then return end

    if item.components.edible then
        for i,foodtype in ipairs(FOODGROUP.OMNI.types) do
            if foodtype == item.components.edible.foodtype then
                return true
            end
        end
    end    
end

The itemtestfn for container data is a function that runs on client and server. However the functions for the beard sack reference server-side components.

Implementation should be changed to use tags instead.