Remote events not firing?

so im making a script to fire some events based on values when a player moves but all of the sudden script stops working and doesnt fire event i tried debugging and not a single thing works.

local script:

local Player = game.Players.LocalPlayer
local Character = Player:WaitForChild("Character")
local Humanoid = Character.Humanoid
local speed = Player.stats.Speed
local equipped = Character:WaitForChild("EquippedWeight")

local VectorZero = Vector3.new(0, 0, 0)

local db = false

local function Moved()      
    if Humanoid.MoveDirection ~= VectorZero then
        if not db then
            db = true

            if equipped == "none" then 
                game.ReplicatedStorage.Stats.RUN:FireServer() -- fires event to add speed

            elseif equipped == "100lbs" then
                if speed.Value >= 100 and speed.Value < 5000 then
                    game.ReplicatedStorage.Stats.RUN:FireServer()
                else
                    game.ReplicatedStorage.Errors.NotWeight:FireServer() -- fires event that opens gui saying not enough stats
                end

            elseif equipped == "1ton" then
                if speed.Value >= 5000 and speed.Value < 500000 then
                    game.ReplicatedStorage.Stats.RUN:FireServer()
                else
                    game.ReplicatedStorage.Errors.NotWeight:FireServer()
                end

            elseif equipped == "10ton" then
                if speed.Value >= 500000 and speed.Value < 5000000 then
                    game.ReplicatedStorage.Stats.RUN:FireServer()
                else
                    game.ReplicatedStorage.Errors.NotWeight:FireServer()
                end

            end
            wait(3)
            db = false
        end
    else
    end 
end

Humanoid:GetPropertyChangedSignal("MoveDirection"):Connect(Moved) 

everything down to the last line doesnt work for some odd reason?

i dont know what im doing wrong so pls help.

server script:

game.ReplicatedStorage.Stats.RUN.OnServerEvent:connect(function(player)
    player.stats.Speed.Value = player.stats.Speed.Value + player.Character.SpeedAdd.Value
end)