error with 'new Position'

Hey i get the error that i don't understand:

Code:

Unhandled exception executing command 'test' in test: Argument 2 passed to pocketmine\math\AxisAlignedBB::setBounds() must be of the type float, null given, called in phar://C:/Users/steve/Desktop/MCPE server/Lobby Server/PocketMine-MP.phar/src/pocketmine/entity/Entity.php on line 647

TypeError: "Argument 2 passed to pocketmine\math\AxisAlignedBB::setBounds() must be of the type float, null given, called in phar://C:/Users/steve/Desktop/MCPE server/Lobby Server/PocketMine-MP.phar/src/pocketmine/entity/Entity.php on line 647" (EXCEPTION) in "vendor/pocketmine/math/src/AxisAlignedBB" at line 45

i get the error when i run the command and the code is:

PHP:

$x = $config->getNested($arena.".x");
$y = $config->getNested($arena.".y");
$z = $config->getNested($arena.".z");

$spawn = new Position($x+0.5, $y, $z+0.5, $level);
$level->loadChunk($spawn->getFloorX(), $spawn->getFloorZ());
$player->teleport($spawn,0,0);


it glitches me in the ground instead of teleportation and gives the error

 

Which version of PMMP are you using?

 

intval() $x, $y and $z and strval() $level

 

I was used an earlier version of the new 3.0.0 api, but then I updated to the latest and still have the errors

The error is strange because it was working fine wile I was testing and then I get the error randomly so idk what caused it?

 

Maybe saving it as "y"

 

just rename "x", "y" and "z" by "posX" etc or what you want.