Undefined offset 1 ,help

Code :

PHP:

    public function onRun($ticks){
        $money = $this->plugin->getServer()->getPluginManager()->getPlugin("EconomyAPI");
        $money_top = $money->getAllMoney();
        arsort($money_top);
        $particle = new FloatingTextParticle(new Vector3($this->plugin->cf->get("x"), $this->plugin->cf->get("y"), $this->plugin->cf->get("z")), "    §9[§6TOPMONEY§9]\n §3".array_keys($money_top)[0]." §f: §d".$money_top[array_keys($money_top)[0]]. "$\n§3 ".array_keys($money_top)[1]." §f: §d".$money_top[array_keys($money_top)[1]]."$\n§3 ".array_keys($money_top)[2]." §f: §d".$money_top[array_keys($money_top)[2]]."$\n§3 ".array_keys($money_top)[3]." §f: §d".$money_top[array_keys($money_top)[3]]."$\n§3 ".array_keys($money_top)[4]." §f: §d".$money_top[array_keys($money_top)[4]]."$\n§3 ".array_keys($money_top)[5]." §f: §d".$money_top[array_keys($money_top)[5]]."$\n§3 ".array_keys($money_top)[6]." §f: §d".$money_top[array_keys($money_top)[6]]."$\n§3 ".array_keys($money_top)[7]." §f: §d".$money_top[array_keys($money_top)[7]]."$\n§3 ".array_keys($money_top)[8]." §f: §d".$money_top[array_keys($money_top)[8]]."$\n§3 ".array_keys($money_top)[9]." §f: §d".$money_top[array_keys($money_top)[9]]."$ §r");
        $this->player->getLevel()->addParticle($particle, [$this->player]);
    }
}

 

Screenshot

 

Lemme take a look at your main at line 85.