Solved Potion effect problem

So... I'm here again.
I have this code:

String potion1 = getConfig().getString("Kits." + s + ".Potion-1");
Integer potion1seconds = getConfig().getInt("Kits." + s + ".PotionSeconds-1");

player.addPotionEffect(new PotionEffect(PotionEffectType.valueOf(potion1), potion1seconds*20, 0));

The underlined function don't work, it says

What can i do?

P.S.: I want on player death to spawn a skeleton or another mob, what's the code?

 

I'm pretty sure you need to use PotionEffectType.getByName() instead of PotionEffectType.valueOf()

 

RenegadeEagle thanks, now i want on player death to spawn a skeleton, what's the code?

 

Code:

 @EventHandler
    public void onPlayerDeath(PlayerDeathEvent event){
        Entity mob = event.getEntity().getLocation().getWorld().spawnEntity(event.getEntity().getLocation(), EntityType.SKELETON);   
        //Do whatever you want to the mob.
    }

 

RenegadeEagle Thanks, resolved.