[SOLVED] Workspace.Manage.RoomCheck:10: attempt to call global 'check' What's going on?

My script spits out Workspace.Manage.RoomCheck:10: attempt to call global 'check' (a nil value) What's going on?

Here's my code

-- Room Checker Script
local boardRooms = game.Workspace.Manage.SurfaceGui.Rooms
local roomDbase = game.ReplicatedStorage.RoomDatabase.Standard
Ok = Color3.new(0, 184, 6)
Ta = Color3.new(184,0,0)

repeat
  wait(15)
  -- Normal Rooms
  check("101")
  check("102")
  check("103")
  check("104")
  check("105")
  check("106")
  check("201")
  check("202")
  check("203")
  check("204")
  check("205")
  check("206")
  check("301")
  check("302")
  check("303")
  check("304")
  check("305")
  check("306")
  wait(1)
  -- Suite Rooms
  check("207S")
  check("208S")
  check("209S")
  check("210S")
  check("307S")
  check("308S")
  check("309S")
  check("310S")
  check("400S")
  wait(1)
until script.Parent == nil



function check(roomId)
  if roomDbase[roomId].Owner.Value ~= "" then
      boardRooms[roomId].BackgroundColor3 = Ta
        boardRooms[roomId].N1.Text = roomDbase[roomId].Owner.Value
        print("Room "..roomId.." assigned to board.")
  end
  if roomDbase[roomId].Owner.Value == "" then
      boardRooms[roomId].BackgroundColor3 = Ok
        boardRooms[roomId].N1.Text = "Available"
        print("Room "..roomId.." cleared from board.")
  end
end