Call to a member function getRarity() on null

foreach(KitsManager::$kits as $id => $kit)
{
if($kit->getRarity() == $rarity)
$i->addItem($kit->getItem()->setCustomName("§r§eКит ".$this->getColor($p,$kit).$kit->getName()." §eредкости §r".$kit->getStringRarity()));
}
Please help me!

 

$kit is null, link to plugin?

 

no links, this is my plugin

 

Then at least post the full code?
If you want to fix it yourself, the problem is something is causing KitsManager::$kits to have null

 

<?php

namespace Cust0mPhase\Managers;

use pocketmine\item\{Item as I,enchantment\Enchantment as E};

class KitsManager{

/**
* deleted kits: armorsmith, cannoneer, enchanter, fisherman, pharaoh, snowman, disco, grenade, princess, batguy
* deleted perks: ender mastery, instant smelting, marksmanship, mining expertise, knowledge, annoy-o-mite, revenge
*/

const ARMORER = 0;
const BASEBALL_PLAYER = 1;
const ECOLOGIST = 2;
const ENDERCHEST = 3;
const ENDERMAN = 4;
const FARMER = 5;
const HUNTER = 6;
const KNIGHT = 7;
const PYRO = 8;
const ROOKIE = 9;
const SPELEOLOGIST = 10;
const TROLL = 11;
const FROG = 12;
const SCOUT = 13;
const CANNONEER = 14;

//const BATGUY = 12;
//const ENERGIX = 12;

/** @var \SplFixedArray */
public static $kits = null;

/**
* @param Item $item
*
* @return mixed
*/
public static function getKitByItem(I $item){
foreach(self::$kits as $kId => $kit){
if($kit->getItem()->getId() == $item->getId()) return $kit;
}
return null;
}

/**
* @param array $args
* @param int $id
* @param int $lvl
*
* @return Item
*/
public static function enchant(array $args,int $id,int $lvl){
$item = I::get($args[0],isset($args[1])?$args[1]:0,isset($args[2])?$args[2]:1);
return $item->addEnchantment(E::getEnchantment($id)->setLevel($lvl));
}

/**
* @param array $args
* @param int $id
* @param int $lvl
* @param int $id1
* @param int $lvl1
* @param int $id2
* @param int $lvl2
*
* @return Item
*/
public static function massiveEnchant(array $args,int $id,int $lvl,int $id1,int $lvl1,int $id2 = null,int $lvl2 = null){
$item = I::get($args[0],isset($args[1])?$args[1]:0,isset($args[2])?$args[2]:1);
if($id2 == null)
return $item->addEnchantment(E::getEnchantment($id)->setLevel($lvl))->addEnchantment(E::getEnchantment($id1)->setLevel($lvl1));
else{
$i = $item->addEnchantment(E::getEnchantment($id)->setLevel($lvl))->addEnchantment(E::getEnchantment($id1)->setLevel($lvl1));
return $i->addEnchantment(E::getEnchantment($id2)->setLevel($lvl2));
}
}

/**
* @param $args
* @param string $customName
*
* @return Item
*/
public static function setCName(array $args,string $customName){
$item = I::get($args[0],isset($args[1])?$args[1]:0,isset($args[2])?$args[2]:1);
return $item->setCustomName($customName);
}

/*Armorer - 2 => [I::get(307),I::get(316),I::get(317)],3 => [self::enchant([307],0,1),I::get(316),I::get(309)]
* Baseball Player - 2 => [self::enchant([306],0,1),I::get(308),self::enchant([268],12,1)],3 => [self::enchant([310],0,1),I::get(308),self::enchant([267],12,1)]
* Ecologist - 2 => [self::enchant([258],15,2),I::get(17,0,16),I::get(316)],3 => [self::enchant([279],15,1),I::get(17,0,32),I::get(316)]
* Enderchest - 2 => [I::get(322,0,2),I::get(D_BOOTS)],3 => [I::get(322,0,4),$this->enchant([D_BOOTS,0,1),I::get(I_CHESTPLATE)]
* Enderman - 2 => [I::get(368,0,2),I::get(I_SWORD)],3 => [I::get(368,0,3),I::get(I_SWORD),I::get(I_LEGGINGS)]
*/

/**
* @param $id
* @param $name
* @param $items
* @param $description
* @param $rarity
* @param $item

* @return bool
*/
public static function registerKit($id,$name,$items,$description,$rarity,$item){
if(isset(self::$kits[$id])) return false;
self::$kits[$id] = new KitsManager($name,$items,$description,$rarity,$item);
return true;
}

/**
* @return KitsManager[]
*/
public static function getKits(){
return self::$kits;
}

/**
* @return mixed
*/
public static function getKit(int $id){
if(!isset(self::$kits[$id])) return false;
return self::$kits[$id];
}

/**
* @return mixed
*/
public static function getKitByName(string $name){
if(!defined(KitsManager::class."::".strtoupper($name))) return false;
return self::getKit(constant(KitsManager::class."::".strtoupper($name)));
}

private $name;
private $items;
private $description;
private $rarity;
private static $instance = null;

/**
*
* KitsManager constructor.
*
* @param $id
* @param $name
* @param $items
* @param $description
* @param $rarity
* @param $item
*/
public function __construct($name,$items,$description,$rarity,$item){
$this->name = (string) $name;
$this->items = $items;
$this->description = (string) $description;
$this->rarity = (string) $rarity;
$this->item = (int) $item;
self::$instance = $this;
}

public static function getInstance(){
return self::$instance;
}

/**
* @return string
*/
public function getName(){
if($this->name == "Baseball_Player") return "Baseball Player";
return $this->name;
}

/**
* @return array
*/
public function getItems(){
return $this->items;
}

/**
* @return string
*/
public function getDescription(){
return $this->description;
}

/**
* @return string
*/
public function getRarity(){
return $this->rarity;
}

/**
* @return Item
*/
public function getItem(){
$item = I::get($this->item);
//if($this->getName() == "Frog") $item->setCustomColor(\pocketmine\utils\Color::getDyeColor(10));
return $item;
}

/**
* @return int
*/
public function getPrice(){
$price = 4000;
switch($this->getRarity()){
case "rare": $price = 6000; break;
case "legendary": $price = 8000; break;
}
return $price;
}

/**
* @param $level
*
* @return int
*/
public function getLevelPrice(int $level){
$price = 2000;
switch($this->getRarity()){
case "common":
if($level == 2) $price = 2000;
if($level == 3) $price = 2500;
break;
case "rare":
if($level == 2) $price = 4000;
if($level == 3) $price = 4500;
break;
case "legendary":
if($level == 2) $price = 6000;
if($level == 3) $price = 6500;
break;
}
return $price;
}

/**
* @return string
*/
public function getLowName(){
$n = strtolower($this->getName());
return str_replace(" ","_",$n);
}

/**
* @return string
*/
public function getStringRarity(){
$str = "§a§lＣＯＭＭＯＮ§r";
switch($this->getRarity()){
case "rare": $str = "§9§lＲＡＲＥ§r"; break;
case "legendary": $str = "§6§lＬＥＧＥＮＤＡＲＹ§r"; break;
}
return $str;
}
}

 

You have called

PHP:

null->getRarity();

but null hasn't this function... so simply look at the line that's showed in the error and change null to some object that has getRarity() function, or remove the line

 

if I delete this line, there will be no sorting of whales by rarity

 

Well then don't put null values in KitsManager::$kits

 

They should not be zero, since whales are added to the array of the plugin

 

As Wolfdale said, you'll need to post the full code to get help.