Gedmo Tree getPath Error: Node is not related to this repository 500 Internal Server Error - InvalidArgumentException

Question

I am getting error:

Node is not related to this repository
500 Internal Server Error - InvalidArgumentException

UPDATE 1: it does not matter if

Answer 1

Got it working!

Here are the needed changes:

instead of

nodeDecorator' => function($node) use ($repo)
{
    return '<a href="/project_path/'. implode('/', $repo->getPath($node)) .'">'. $node['title'] .'</a>';
}

one should write

'nodeDecorator' => function($node) use ($repo)
{
    return '<a href="/project_path/'. @implode('/', $repo->getPath($repo->findOneBy(array('id' => $node['id'])))) .'">'. $node['title'] .'</a>';
}

and in Category class add

public function __toString()
{
    return $this->getTitle();
}

That is it, path to each node now should be showing.