# Error Container Value Not Found Exception

**URL:** <https://discourse.slimframework.com/t/error-container-value-not-found-exception/253>\
**Category:** Questions\
**Created:** [May 14, 2016, 2:29am UTC](https://discourse.slimframework.com/t/error-container-value-not-found-exception/253 "2016-05-14T02:29:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Nara](https://avatars.discourse-cdn.com/v4/letter/n/e5b9ba/32.png) [@Nara](https://discourse.slimframework.com/u/Nara)\
**Post date:** [May 14, 2016, 2:29am UTC](https://discourse.slimframework.com/t/error-container-value-not-found-exception/253/1 "2016-05-14T02:29:05Z")

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I’ve been trying to follow a video on youtube for Slim authentication but I’m getting this msj.

Can anyone please explain to my why do I get this msj and how can I solve it?

I’ve googled for solution but I can find anything except a post that directed me to this page.

Bellow is the error:

Details  
Type: Slim\Exception\ContainerValueNotFoundException  
Message: Identifier “property” is not defined.  
File: C:\wamp\www\vendor\slim\slim\Slim\Container.php  
Line: 119  
Trace

#0 C:\wamp\www\vendor\slim\slim\Slim\Container.php(144): Slim\Container-\>get(‘property’)  
#1 C:\wamp\www\app\Controllers\Controller.php(15): Slim\Container-\>\_\_get(‘property’)  
#2 C:\wamp\www\app\Controllers\Auth\AuthController.php(10): App\Controllers\Controller-\>\_\_get(‘view’)  
#3 [internal function]: App\Controllers\Auth\AuthController-\>getSignUp(Object(Slim\Http\Request), Object(Slim\Http\Response), Array)  
#4 C:\wamp\www\vendor\slim\slim\Slim\Handlers\Strategies\RequestResponse.php(41): call\_user\_func(Array, Object(Slim\Http\Request), Object(Slim\Http\Response), Array)  
#5 C:\wamp\www\vendor\slim\slim\Slim\Route.php(325): Slim\Handlers\Strategies\RequestResponse-\>\_\_invoke(Array, Object(Slim\Http\Request), Object(Slim\Http\Response), Array)  
#6 C:\wamp\www\vendor\slim\slim\Slim\MiddlewareAwareTrait.php(116): Slim\Route-\>\_\_invoke(Object(Slim\Http\Request), Object(Slim\Http\Response))  
#7 C:\wamp\www\vendor\slim\slim\Slim\Route.php(297): Slim\Route-\>callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response))  
#8 C:\wamp\www\vendor\slim\slim\Slim\App.php(441): Slim\Route-\>run(Object(Slim\Http\Request), Object(Slim\Http\Response))  
#9 C:\wamp\www\vendor\slim\slim\Slim\MiddlewareAwareTrait.php(116): Slim\App-\>\_\_invoke(Object(Slim\Http\Request), Object(Slim\Http\Response))  
#10 C:\wamp\www\vendor\slim\slim\Slim\App.php(337): Slim\App-\>callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response))  
#11 C:\wamp\www\vendor\slim\slim\Slim\App.php(298): Slim\App-\>process(Object(Slim\Http\Request), Object(Slim\Http\Response))  
#12 C:\wamp\www\public\index.php(5): Slim\App-\>run()  
#13 {main}

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<div class="post-metadata">

**Author:** ![TheLobos](https://avatars.discourse-cdn.com/v4/letter/t/e9bcb4/32.png) [@TheLobos](https://discourse.slimframework.com/u/TheLobos)\
**Post date:** [May 14, 2016, 9:37am UTC](https://discourse.slimframework.com/t/error-container-value-not-found-exception/253/2 "2016-05-14T09:37:56Z")

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Please show us a few lines of the code you’re using which is generating this error. It’s kind of hard to tell what’s wrong when we don’t see what you’re doing.