Trello API create board on join code not working?

I was trying to make a list on Trello when someone joins the game. So, a list for each player. The name of the list is the player's username. My code doesn't work though. Here is my code.

local trelloapi = require(game.ServerScriptService:WaitForChild("TrelloAPI"))
local boardid = trelloapi:GetBoardID("management records")

game.Players.PlayerAdded:Connect(function(plr)
    print("woo hooo player found")
    trelloapi:AddList("".. plr.Name.. "'s records", boardid)
    print("omg board created")
end)

Edit: updated code

local trelloapi = require(game.ServerScriptService:WaitForChild("TrelloAPI"))
local boardid = trelloapi:GetBoardID("management records")
local players = game:GetService("Players")

players.PlayerAdded:Connect(function(plr)
    print("woo hooo player found")
    trelloapi:AddList("".. plr.Name.."", boardid)
    print("omg list created")
end)

(end of edit) Notice: The first print command didn't show up in the output, so I'm pretty sure it's something above that. nothing showed up in the output. My API does work, I tested it. Suggestions would be nice, thank you!