can't spawnout particles for players without permission: essentials.*

Hello.
I can't spawnout particles after connecting for players without permission: essentials.*.

Code:

public void onJoin (PlayerJoinEvent e) {
Player p = e.getPlayer ();
if (plugin.getConfig (). getBoolean ("Particles.enable") == true) {
p.spawnParticle (org.bukkit.Particle.valueOf (plugin.getConfig (). getString ("Particle_Type")), p.getLocation (),
plugin.getConfig (). getInt ("Particle_Amount"), 1.2F, 1.2F, 1.2F);
}

For players with permission, particles work normally, but without permission they do not work.