Solved Error loading Chunk

I have a big mistake that I could not be fixing.
// Code
$border = 500;
$x = mt_rand(-$border, $border);
$z = mt_rand(-$border, $border);
$y = $this->getLevel()->getHighestBlockAt($x,$z);
$vector = new Vector3($x, $y, $z);
$this->getLevel()->loadChunk($x >> 4, $z >> 4);
$player->teleport($vector);
print_r([$x, $y, $z]);

what happens here is that "y" returns -1.
I tried loading the Chunk but it doesn't work.

 

You're taking the tallest block without loading the chunk

PHP:

$border = 500;
$x = mt_rand(-$border, $border);
$z = mt_rand(-$border, $border);
$this->getLevel()->loadChunk($x >> 4, $z >> 4);

$y = $this->getLevel()->getHighestBlockAt($x,$z);
$vector = new Vector3($x, $y, $z);

$player->teleport($vector);

 

I used the same structure that you did, load the chunk before locating the "y" and it didn't work..

 

I believe you are trying to load a chunk that has not yet been generated.
https://github.com/pmmp/PocketMine-...c58b79fa/src/pocketmine/level/Level.php#L2332

 

From what I see is in the reason. Thank you very much Joao.