Bug with unserialize big json from api with 200 items

[RemcoSmitsDev]

I'm using the following code:

use Curl\Curl;
use Spatie\Fork\Fork;

$output = Fork::new()->run(
    function () {
        $curl = new Curl();
        return $curl->get('https://jsonplaceholder.typicode.com/todos');
    }
);

var_dump($output);

When getting all the todo's from the api it will throw an exception:
Notice: unserialize(): Error at offset 8178 of 8178 bytes .... /src/Task.php line 115

I already have increased the buffer size(tried increasing until the max) but still got this problem/bug.
When i slice the array of items to 60 instead of 200 that come from that response.

Is there a solution for this problem/bug?