LogicException with message '... must return a relationship instance.'

return new Symfony\Component\HttpFoundation\RedirectResponse($this->generateUrl('name_of_route'));

$user = $this->getUser()->getUserId();
$event = $this->getDoctrine()->getRepository('AppBundle:events')->findOneBy(array('user' => $this->getUser()->getUserId() ));
if($event instanceof events){ //events refers to 'events' entity
// code to handle returning user
}

parameters:
    cricketMaxLimit: 10

public function author() {
    $this->belongsTo(Author::class);
}

public function author() {
    return $this->belongsTo(Author::class);
}

public function newsMany()
{
    return $this->belongsToMany('App\News')->paginate(20);
}

public function newsMany()
{
    return $this->belongsToMany('App\News');
}

 $news=Category::findOrFail($id)->newsMany()->paginate(20);
 return view('view name', compact('news'));