setMaxHealth on entity

Code:

Call to a member function setMaxHealth() on null" (EXCEPTION) in "plugins/Boss/src/MiniBosses/Main" at line 130

PHP:

public function spawnBoss(string $name = "Boss") {
        $data = $this->data->get($name);
        if(!$data) {
            return "No data, Boss does not exist";
        }elseif(!$this->getServer()->loadLevel($data["level"])) {
            return "Failed to load Level {$data["level"]}";
        }
        $networkId = (int) $data["network-id"];
        $pos = new Position($data["x"], $data["y"], $data["z"], $this->getServer()->getLevelByName($data["level"]));
        $health = $data["health"];
        $range = $data["health"];
        $attackDamage = $data["attackDamage"];
        $attackRate = $data["attackRate"];
        $speed = $data["speed"];
        $drops = $data["drops"];
        $respawnTime = $data["respawnTime"];
        $skin = ($networkId === 63 ? $data["skin"] : "");
        $heldItem = $data["heldItem"];
        $scale = $data["scale"] ?? 1;
        $nbt = Boss::createBaseNBT($pos);
        $nbt->setTag(new ListTag("spawnPos", [new DoubleTag("", $pos->x), new DoubleTag("", $pos->y), new DoubleTag("", $pos->z)]));
        $nbt->setFloat("range", $range * $range);
        $nbt->setFloat("attackDamage", $attackDamage);
        $nbt->setInt("networkId", $networkId);
        $nbt->setInt("attackRate", $attackRate);
        $nbt->setFloat("speed", $speed);
        $nbt->setString("drops", $drops);
        $nbt->setInt("respawnTime", $respawnTime);
        $nbt->setString("skin", $skin);
        $nbt->setString("heldItem", $heldItem);
        $nbt->setFloat("scale", $scale);
        $ent = Entity::createEntity("network->id", $pos->level, $nbt);
        $ent->setMaxHealth($health);//line 130
        $ent->setHealth($health);
        $ent->setNameTag($name);
        $ent->setNameTagAlwaysVisible(true);
        $ent->setNameTagVisible(true);
        $ent->spawnToAll();
        return true;
    }

The setMaxHealth() doesn't work. How can I solved this problem ?

 

PHP:

$ent->setHealth($ent->getMaxHealth());

 

remove line 130 and replace line 131 with this

 

PHP:

$ent = Entity::createEntity("network->id", $pos->level, $nbt);

There is no such entity "network->id" thats why its null use $networkId

 

PHP:

$ent = Entity::createEntity("/*network->id*/", $pos->level, $nbt);

It's the entity id in the folder.

 

There is no such entity network id, use $networkId instead