An alias "ScnSocialAuth_ZendSessionManager" was requested but no service could be found - php

Question

I am trying to install ScnSocialAuth_ZendSessionManager into my zend 2 application.
i am getting the following error message when i try to go to the login or registration page:
An alias "ScnSocialAuth_ZendSessionManager" was requested but no service could be found.
i have followed the instructions here:
and uploaded it.
i then install
./vendor/socalnick/scn-social-auth/config/scn-social-auth.global.php.dist
/vendor/socalnick/scn-social-auth/config/scn-social-auth.local.php.dist
to my config.
Then within the scn-social-auth.global.php i did the following:
$settings = array(
'zend_db_adapter' => 'Zend\Db\Adapter\Adapter',
'zend_session_manager' => 'Zend\Session\SessionManager'
}
);
return array(
'scn-social-auth' => $settings,
'service_manager' => array(
'aliases' => array(
'ScnSocialAuth_ZendDbAdapter' => (isset($settings['zend_db_adapter'])) ? $settings['zend_db_adapter']: 'Zend\Db\Adapter\Adapter',
'ScnSocialAuth_ZendSessionManager' => (isset($settings['zend_session_manager'])) ? $settings['zend_session_manager']: 'Zend\Session\SessionManager',
),
),
);
i also created a ./config/autoload/session.local.php:
<?php
return array(
'service_manager' => array(
'invokables' => array(
'Zend\Session\SessionManager' => 'Zend\Session\SessionManager',
),
),
);
so, i am unclear why i am still getting the error message;
would really appriciate any advise on this.
UPDATE
i also added the module to composer:
"require": {
"php": ">=5.3.3",
"zendframework/zendframework": "2.*",
"socalnick/scn-social-auth": "1.*"
}
UPATE
Wilt has asked what values are returned when i var_dump the config values.
the returned values are:
array (size=3)
'ScnSocialAuth_ZendDbAdapter' => string 'Zend\Db\Adapter\Adapter' (length=23)
'ScnSocialAuth_ZendSessionManager' => string 'Zend\Session\SessionManager' (length=27)
'zfcuser_zend_db_adapter' => string 'Zend\Db\Adapter\Adapter' (length=23)
you will observe that the ScnSocialAuth_ZendSessionManager is aliasing the zend sesssion manager.
so, i am unclear why it say that the service cannot be found.
would really appriciate some advice on this.

Answer 1

You need the scn-social-auth.global.php and the scn-social-auth.local.php to you application config folder and set all the config parameters that are required.
In this file you find the key 'ScnSocialAuth_ZendSessionManager'. Your issue is probably related to some configuration problem related to these config files.
Since you said you loaded them I would says something is wrong with your autoload setup.
Does your ZF2 application have the proper system configuration:
'module_listener_options' => array(
'module_paths' => array(
'./module',
'./vendor',
),
'config_glob_paths' => array(
'config/autoload/{{,*.}global,{,*.}local}.php',
)
)
Check once if your merged $config array contains all your keys?
$config = $serviceManager->get('Config');