Text filtration script would not work for some reason; how do I fix it?

The text filtration script that I made does not work for some reason. I want to make the Script print the filtered text on the Developer Console, but it just keeps on printing "Instance".

I do not know what is happening here, and I would be glad to have a solution for this.

Here is my code below:

LocalScript for the client:

LandMgr.Background.SubmitButton.Activated:Connect(function()    
    LandRenameEvent:FireServer(Player, LandMgr.Background.PlotName.Text) 
end) -- When the player clicks on the submit button, send the "raw" text and the player who posted it to the Server

Script for the server:

local TextService = game:GetService("TextService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

local LandRenameEvent = Instance.new("RemoteEvent")
LandRenameEvent.Name = "LandRenameEvent"
LandRenameEvent.Parent = ReplicatedStorage

local function getTextObject(message, fromPlayerId)
  local textObject
  local success, errorMessage = pcall(function()
    textObject = TextService:FilterStringAsync(message, fromPlayerId)
  end)
  if success then
    return textObject
  elseif errorMessage then
    print("Error generating TextFilterResult:", errorMessage)
  end
  return false
end

-- The function to filter the text
local function getFilteredMessage(textObject)
  local filteredMessage
  local success, errorMessage = pcall(function()
    filteredMessage = textObject:GetNonChatStringForBroadcastAsync()
  end)
  if success then
    return filteredMessage
  elseif errorMessage then
    print("Error filtering message:", errorMessage)
  end
  return false
end

-- Fired when client sends a request to write message
local function onSetSignText(player, text)
  if text ~= "" then
    -- filter the incoming message and send the filtered message
    local messageObject = getTextObject(text, player.UserId)
    local filteredText = ""
    filteredText = getFilteredMessage(messageObject)
    print(filteredText) -- Print the filtered text
  end
end

LandRenameEvent.OnServerEvent:Connect(onSetSignText) -- When the player clicks the submit button from the client it fires this remote event; triggering the function onSetSignText()