Error on disconnect if a player hasn't fully joined the table

[Thirtybird]

error in script (global) function : chunk_3: attempt to index a nil value

function onPlayerDisconnect(person)
    --pl (person)
    local color = string.lower(person.color)
    --pl (color)
    players[color].steam = ""
    players[color].active = false
    updatesUI("player"..color, {
      image = "ui_noplayer",
      color = players[color].color.."33",
      tooltip = "Player " .. color .. " inactive",
    })
end