Why is this not working?

local Self=script.Parent;
local Humanoid=Self:WaitForChild("Humanoid");
local Torso=Self:WaitForChild("Torso");
local Pathfinding=game:GetService("PathfindingService");
local findplayer = script.Parent.playername.Value
local Player = game.Players:WaitForChild(findplayer)

local MinimumDistance = 500

function FetchCoordinate()
	local Target={
		Position=Torso.Position;
		Distance=MinimumDistance;
	}
		local pCharacter=Player.Character;
		local pTorso=pCharacter:FindFirstChild("Torso");
		if(pCharacter and pTorso and Player:DistanceFromCharacter(Torso.Position) < Target.Distance)then
			Target.Position=pTorso.Position;
			Target.Distance=Player:DistanceFromCharacter(Torso.Position) < Target.Distance;
	end
	local Coordinates=Pathfinding:ComputeSmoothPathAsync(Torso.Position, Target.Position, MinimumDistance):GetPointCoordinates();
	return Coordinates[math.min(#Coordinates, 2)];
end

while true do
	Humanoid:MoveTo(FetchCoordinate())
	Humanoid.MoveToFinished:wait()
end

this is a pathfind script. this will follow the player whos name is in findplayer. this script will not work the error in the output is. 00:13:40.929 - Workspace.Player.Humanoid.Player's Cop.Main Script:15: attempt to index upvalue 'Player' (a nil value) 00:13:40.930 - Stack Begin 00:13:40.930 - Script 'Workspace.Player.Humanoid.Player's Cop.Main Script', Line 15 - global FetchCoordinate 00:13:40.930 - Script 'Workspace.Player.Humanoid.Player's Cop.Main Script', Line 26 00:13:40.931 - Stack End