zend framework2 - Factory not getting constructed service manager class -

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here service configuration:

    public function getserviceconfig()     {         return array(             'factories' => array(                 'squiddle\designpackage' => function($sm){                                       $designpkg = new designpackage($sm);                     return $designpkg;                 }             )            );     }

it's being used within function gets triggered on dispatch event.

here it's usage:

$e->getapplication()->getservicemanager()->get('squiddle\designpackage');

my error designpackage being constructed null instead of service manager.

not sure whats wrong here;

it problem in designpackage constructor


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