Working in single player testing but not multiplayer?

Help and Feedback Scripting Support
#1

Hello Developers,
so i was making a game called hangman where you have to guess a letter to complete the word. And it seems fine when i was testing on singleplayer test but when i make it to multiplayer test, it doesn’t work.

Here’s the video:

Here’s my script

  • (Client)
for _, i in pairs(script.Parent:GetChildren()) do
	if i:IsA('TextButton') then
		i.MouseButton1Click:Connect(function()
			game.ReplicatedStorage.vote:FireServer(i.Name)
		end)
	end
end
  • (Server)

game.ReplicatedStorage.vote.OnServerEvent:Connect(function(player,vote)
	for _, plr in pairs(game.Players:GetPlayers()) do
		if plr:IsA('Player') then
			local PlayerUi = plr:WaitForChild('PlayerGui',50)
			local VoteUi = PlayerUi:WaitForChild('Vote',50)
			local Voted = VoteUi.LetterVote:FindFirstChild(vote).Frame
			
			for _, remove in pairs(VoteUi.LetterVote:GetChildren()) do
				if remove:FindFirstChild('Frame') then
					if remove.Frame:FindFirstChild(player.Name) then
						remove.Frame:FindFirstChild(player.Name):Destroy()
						break
					end
				end
			end
			local userId = player.UserId
			local thumbType = Enum.ThumbnailType.HeadShot
			local thumbSize = Enum.ThumbnailSize.Size420x420
			local content, isReady = Players:GetUserThumbnailAsync(userId, thumbType, thumbSize)

			local imageLabel = game.ReplicatedStorage.Profile:Clone()
			imageLabel.Parent = Voted
			imageLabel.Name = player.Name
			imageLabel.Image = content
		end
	end
end)
#2

i finally fixed it by testing it to Roblox Game instead of Roblox Studio. and the problem was in

local userId = player.UserId
			local thumbType = Enum.ThumbnailType.HeadShot
			local thumbSize = Enum.ThumbnailSize.Size420x420
			local content, isReady = Players:GetUserThumbnailAsync(userId, thumbType, thumbSize)

			local imageLabel = game.ReplicatedStorage.Profile:Clone()
			imageLabel.Parent = Voted
			imageLabel.Name = player.Name
			imageLabel.Image = content