Will this output crash my game eventually? or should i leave it be?

Its coming from a "press shift to run" script. it doesnt break the script but im questioning if eventually it will disturb the game?

13:25:35.448 - Remote event invocation queue exhausted for Workspace.DemonsEmperor.Head.Running.CharacterSoundEvent; did you forget to implement OnServerEvent? (x117)

local mouse = game.Players.LocalPlayer:GetMouse()
local running = false
local RunSpeed = 30

function getTool()  
    for _, kid in ipairs(script.Parent:GetChildren()) do
        if kid.className == "Tool" then return kid end
    end
    return nil
end


mouse.KeyDown:connect(function (key)
    key = string.lower(key)
    if string.byte(key) == 48 then
        running = true
        local keyConnection = mouse.KeyUp:connect(function (key)
            if string.byte(key) == 48 then
                running = false
            end
        end)
        for i = 1,5 do
            game.Workspace.CurrentCamera.FieldOfView = (70+(i*2))
            wait()
        end
        game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = game.Players.LocalPlayer.Character.Humanoid.WalkSpeed + RunSpeed
        repeat wait () until running == false
        keyConnection:disconnect()
        game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = game.Players.LocalPlayer.Character.Humanoid.WalkSpeed - RunSpeed
        for i = 1,5 do
            game.Workspace.CurrentCamera.FieldOfView = (80-(i*2))
            wait()
        end
    end
end)