Why won't this animation imported from blender work?

ok, this is an animation imported from blender, this is what the animation is MEANT to do:
https://i.gyazo.com/5be7ff213a4a6055583dbec4c078ec6a.mp4
this is what happens:
https://i.gyazo.com/cb6e72024b43e9aa9d40caed1afc702f.mp4
this is the script that loads the anim and plays it:

script.Parent.Activated:Connect(function()
	Swing = script.Parent.Parent.Humanoid:WaitForChild("Animator"):LoadAnimation(script.Parent.Handle.Swing)
	script.Parent.Parent.Humanoid.Walkspeed = 0
-- sets walkspeed to 0 to allow the anim to play without disturbance
	Swing:Play()
	wait(2.3)
	script.Parent.Parent.Humanoid.WalkSpeed = 16
-- sets walkspeed back after anim duration
end)
script.Parent.Unequipped:Connect(function()
	Swing:Stop()
	script.Parent.Parent.Humanoid.WalkSpeed = 16
-- if the player decides to unequip the tool for whatever reason, speed is restored and anim is stopped
end)

the script is a server script, placed under the tool
if you need more info please request it in the replies

Hatchet should have a Motor6D connected to RightHand, you can copy the Motor6D from the animation model and place it in the tool and, when activated, configure it before the animation starts.

that’s the thing, the entire throw was made in blender so there is no motor6d