load() does not work

Question

For some reason, loading PackedScenes doesn't work.
When loaded, the "prefab" is invisible.

Code:

func spawn_new(nameOf: String) -> void:
    var packedScene = load("res://scenes/prefabs/fishes/" + nameOf + ".tscn")
    var obj = packedScene.instance()

    obj.spawnManager = self
    obj.scoreManager = scoreManager

    get_parent().call_deferred("add_child", obj)

Answer 1

replace this "load" with a preload, maybe it will solve the problem.