error on the first page

Hello,

Can anyone help me troubleshoot where the problem in my codes?

http://127.0.0.1/CompanyGiondaCI/

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A PHP Error was encountered
Severity: Notice
Message: Undefined property: Mpages::$load
Filename: libraries/Form_validation.php
Line Number: 147
Backtrace:
File: C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\CompanyGiondaCI\application\models\mpages.php
Line: 10
Function: __construct
File: C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\CompanyGiondaCI\application\controllers\cpages.php
Line: 32
Function: model
File: C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\CompanyGiondaCI\index.php
Line: 315
Function: require_once

Fatal error: Call to a member function helper() on null in C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\CompanyGiondaCI\system\libraries\Form_validation.php on line 147
A PHP Error was encountered
Severity: Error
Message: Call to a member function helper() on null
Filename: libraries/Form_validation.php
Line Number: 147
Backtrace:

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