RemoteFunction returns nil when it's not supposed to?

I have a script for creating a party system, i decided to use module scripts beacuse it would be used by all clients and they should be somehow connected each other, but turns out if i create a table inside the module script in one client, the other one can't see it. So i have it in a way that module script is only used from the server by use of remote functions, but the remote function keeps returning nil to the local script.

--Module Script
function crew:GetCrew(id)
    print("amount of crews",#allcrew)
    for i,v in pairs(allcrew) do
        if v.id == id then
            print("they're equal")
            print("Crewsystem:",v.name,v.desc) --This prints correctly; "Crewsystem: test test"
            return v
        end
    end
end

--Server Script that creates remote functions
function getcrew.OnServerInvoke(plyr,id)
    local a = crews:GetCrew(id)
    print("Remote Handler: "..a.name,a.desc) --This prints correctly; "Remote Handler: test test"
    if a == nil then
        return error("Cannot find this crew")
    end
    return a
end

--Local Script for creating crews and handling GUI's
local function UpdateMycrew()
    mycrew = nil
    mycrew = modules.getcrew:InvokeServer(tostring(plyr.CrewId.Value))
    print("Updated mycrew")
    print("Local Script:",mycrew.name,mycrew.desc) --This prints; "Local Script: nil nil"
    return true
end

The module script runs and returns the right table, the remote function actually recieves the table and can print the stuff inside it. but it returns it 'nil' to the client. I don't see any syntax mistakes either, this makes no sense?