Why do I keep getting a nil value if OBVIOUSLY there is a value being shown in the player?

So, I'm trying to make a RoleGui and there were many errors with it, but luckily I was able to fix them except one where I keep getting a "nil value"?

Here's the code: local survivors = {}

game.Players.PlayerAdded:Connect(function(player)

player.CharacterAdded:Connect(function(char)
	
	local playerRole = Instance.new("StringValue")
	playerRole.Name = "PlayerRole"
	playerRole.Parent = player

while wait(20) do local plrs = game.Players

for _,players in pairs(game.Players:GetChildren()) do

if #game.Players:GetChildren() == 1 then
	
	players.PlayerGui:WaitForChild("RoleGui").WaitingText.Visible = true
else

players.PlayerGui:WaitForChild("RoleGui").WaitingText.Visible = false
	local randomPlayer = plrs:GetPlayers(math.random(1,#plrs:GetPlayers()))

randomPlayer:WaitForChild("PlayerRole").Value = "Murder"

randomPlayer.PlayerGui:WaitForChild("RoleGui").Frame.RoleText.TextColor3 = Color3.fromRGB(255,0,0)

randomPlayer.PlayerGui:WaitForChild("RoleGui").Frame.RoleText = randomPlayer:WaitForChild("PlayerRole").Value

local clone = game.ServerStorage["Murder Knife"]:Clone()

clone.Parent = randomPlayer.Backpack

for _,player in pairs(plrs:GetPlayers()) do

 if player ~= randomPlayer then
	
	  player.PlayerGui:WaitForChild("RoleGui").Frame.RoleText.TextColor3 = Color3.fromRGB(0,255,0)
	
	player:WaitForChild("PlayerRole").Value = "Survivor"
	
	 player.PlayerGui:WaitForChild("RoleGui").Frame.RoleText.Text = player:WaitForChild("PlayerRole").Value
	
	player.PlayerGui:WaitForChild("RoleGui").Frame:TweenPosition(UDim2.new(0.339,0,0.24,0),"Out","Elastic",0.7)
	
	table.insert(survivors,player)
	
	wait(5)
	
	player.PlayerGui:WaitForChild("RoleGui").Frame:TweenPosition(UDim2.new(0.339,0,1.5,0),"In","Elastic",0.7)
 end
	
	end
end

end

end

end)

end)