Line 158 error

Undefined index:  Qform__FormCallType
Error Type:   E_NOTICE   

Source File:   C:\xampp\htdocs\tracmor\includes\qcodo\_core\qform\QFormBase.class.php         Line:   158   

Line 153:   
Line 154:                if ($objClass) {
Line 155:                    global $$strFormId;
Line 156:                    $$strFormId = $objClass;
Line 157:   
Line 158:                    $objClass->strCallType = $_POST['Qform__FormCallType'];
Line 159:                    $objClass->intFormStatus = QFormBase::FormStatusUnrendered;
Line 160:   
Line 161:                    if ($objClass->strCallType == QCallType::Ajax)
Line 162:                        QApplication::$RequestMode = QRequestMode::Ajax;
Line 163:   

Call Stack:

#0 C:\xampp\htdocs\tracmor\includes\qcodo\_core\qform\QFormBase.class.php(158): QcodoHandleError()
#1 C:\xampp\htdocs\tracmor\login.php(128): QFormBase::Run()

switch (SERVER_INSTANCE) {
        case 'dev':
        case 'test':
        case 'stage':
        case 'prod':
            define ('__DOCROOT__', 'C:/xampp/htdocs');
            define ('__VIRTUAL_DIRECTORY__', '');
            define ('__SUBDIRECTORY__', '/tracmor');

            define('DB_CONNECTION_1', serialize(array(
                'adapter' => 'MySqli5',
                'server' => 'localhost',
                'port' => null,
                'database' => 'tracmor',
                'username' => 'tracuser',
                'password' => 'tracpass',

                'profiling' => false)));
            break;
    }