Tickets Fixed 1.5 Ticket Escalations in Admin CP bring MySQL Error

[Freelancer]

I just want to open the "Ticket Escalations" page in the ACP but as soon as I click the following Server/MySQL Error appears:

Error Info
Mysqli prepare error: Unknown column 'display_order' in 'order clause' - library/Zend/Db/Statement/Mysqli.php:77

Stack Trace
#0 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/Zend/Db/Statement.php(115): Zend_Db_Statement_Mysqli->_prepare('\n\t\t\tSELECT *\n\t\t...')
#1 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/Zend/Db/Adapter/Mysqli.php(381): Zend_Db_Statement->__construct(Object(Zend_Db_Adapter_Mysqli), '\n\t\t\tSELECT *\n\t\t...')
#2 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/Zend/Db/Adapter/Abstract.php(478): Zend_Db_Adapter_Mysqli->prepare('\n\t\t\tSELECT *\n\t\t...')
#3 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/XenForo/Model.php(219): Zend_Db_Adapter_Abstract->query('\n\t\t\tSELECT *\n\t\t...', Array, 2)
#4 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/NixFifty/Tickets/Model/Escalation.php(20): XenForo_Model->fetchAllKeyed('\n\t\t\tSELECT *\n\t\t...', 'escalation_id')
#5 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/NixFifty/Tickets/ControllerAdmin/Escalation.php(13): NixFifty_Tickets_Model_Escalation->getAllEscalations()
#6 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/XenForo/FrontController.php(351): NixFifty_Tickets_ControllerAdmin_Escalation->actionIndex()
#7 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#8 /Applications/XAMPP/xamppfiles/htdocs/mywebsite/admin.php(13): XenForo_FrontController->run()
#9 {main}

Request State
Array
(
    [url] => http://localhost/mywebsite/admin.php?ticket-escalations/
    [_GET] => Array
        (
            [ticket-escalations/] => 
        )

    [_POST] => Array
        (
        )

)

 

[Naz]

Already fixed. Thanks though.