Voice Chat not working

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Godot Version

4.2

Question

I’m trying to add voice chat to my online game after following a super simple tutorial.
The problem is that the voice chat doesn’t seem to be working.
Here is the tutorial I followed (if needed): Godot | voice chat tutorial (youtube.com)

I have a bus called Record that is muted and it takes Audio. My project is also set to listen to audio.

Code:

var effect
var recording

func _ready():
	new_deceiver = false
	time_out = time_out_set
	jump_time = jump_time_set
	chat_box.play("default")
	if is_multiplayer_authority():
		$TestName.text = Network.user_name
		
		$UI.visible = true
		$CamPos/Camera2D.zoom = Vector2(Data.fov, Data.fov)
		looks.play("idle")
		if Network.hat == 0:
			print("Hat error")
			Network.hat = 1
	dec_speed = false
	
	var idx = AudioServer.get_bus_index("Record")
	effect = AudioServer.get_bus_effect(idx, 0)
	effect.set_recording_active(true)
	#effect.

#There is other stuff here blah blah blah. ---	

func _on_send_recording_timer_timeout():
	print("Send Done")
	recording = effect.get_recording()
	effect.set_recording_active(false)
	rpc("send_rec_data", recording.data)
        effect.set_recording_active(true)
	
@rpc() func send_rec_data(rec_data):
	var sample = AudioStreamWAV.new()
	sample.data = rec_data
	sample.format = AudioStreamWAV.FORMAT_16_BITS
	sample.mix_rate = AudioServer.get_mix_rate()*2
	$Audio/AudioStreamPlayer.stream = sample
	$Audio/AudioStreamPlayer.play()

Thank you.