Unable to cast value to Object with TeleportPartyAsync?

You need to pass the player object instead of the player name inside of the table to that function

Also, when removing objects from a table using table.remove, the table is shifted

local players = {}
local debounce = false
if debounce == false then
    debounce = true
script.Parent.Touched:Connect(function(hit)
        local player = game.Players:GetPlayerFromCharacter(hit.Parent)
        table.insert(players, 1, hit.Parent) -- instead of adding player name to the table, add the object
    local humanoid = hit.Parent:FindFirstChild("Humanoid")
        if humanoid then
            humanoid.WalkSpeed = 0
            humanoid.JumpPower = 0
            humanoid.Parent.HumanoidRootPart.Position = game.Workspace.ParkBench.Seat1.Position
            game.Workspace.ParkBench.Seat1.Value.Value = true
            if game.Workspace.ParkBench.Seat1.Value.Value == true then
                humanoid.Parent.HumanoidRootPart.Position = game.Workspace.ParkBench.seat2.Position
                game.Workspace.ParkBench.seat2.Value.Value = true
            end
            if game.Workspace.ParkBench.seat2.Value.Value == true then

                humanoid.Parent.HumanoidRootPart.Position = game.Workspace.ParkBench.Seat3.Position
                game.Workspace.ParkBench.Seat3.Value.Value = true
            end
            if game.workspace.ParkBench.Seat3.Value.Value == true then
                script.Parent.Parent.BusStopShelter.Players.Value = 3
            end
            humanoid.WalkSpeed = 0
            humanoid.JumpPower = 0
            debounce = false

            if script.Parent.Parent.BusStopShelter.Players.Value == 3 then
                local animator = require(game.Workspace.Leave.Animator)
                animator.NewTween:Play()
                local teleportservice = game:GetService("TeleportService") --right here
                teleportservice:TeleportPartyAsync(removedid, players) --something is wrong with this part
            end
    end
    end)    
    wait(5)
    table.remove(players, 1)
    table.remove(players, 1) -- here should  be 1 instead of 2 because we are shifting the table
    table.remove(players, 1) -- here should  be 1 instead of 3 because we are shifting the table
end