Infinite yield possible on 'ServerScriptService.CrawlServer:WaitForChild("CrawlIdle")' ?

What does this mean??

Script: local rStorage = game:GetService("ReplicatedStorage") local rEvents = rStorage:WaitForChild("RemoteEvents")

game.Players.PlayerAdded:Connect(function(plr) local crawlValue = Instance.new("BoolValue",plr) crawlValue.Value = false crawlValue.Name = "CrawlEnabled"

local char = workspace:WaitForChild(plr.Name)
local human = char:WaitForChild("Humanoid")

local idleLoaded = human:LoadAnimation(script:WaitForChild("CrawlIdle"))
local moveLoaded = human:LoadAnimation(script:WaitForChild("CrawlMove"))

human.Running:Connect(function(speed)
    if speed > 0 and crawlValue.Value == true then
        moveLoaded:Play()
    else
        moveLoaded:Stop()
    end
end)

crawlValue:GetPropertyChangedSignal("Value"):Connect(function()
    if crawlValue.Value == true then
        human.WalkSpeed = 8

        idleLoaded:Play()
    else
        human.WalkSpeed = 16

        idleLoaded:Stop()
        moveLoaded:Stop()
    end
end)

end)

rEvents.CrawlEvent.OnServerEvent:Connect(function(plr,enabled) local crawlValue = plr:WaitForChild("CrawlEnabled")

crawlValue.Value = enabled

end)