Tickets Fixed 1.4.8 Server Error Breadcrumb

When I am in Template "nf_tickets_member" (front end) and click on the breadcrumbs "member", the following server error occurs (shown in front end and acp log)

Code:
Error Info
No controller response from NixFifty_Tickets_ControllerPublic_Member::actionIndex - library/XenForo/FrontController.php:486

Stack Trace
#0 /var/www/clients/client180/web812/web/library/XenForo/FrontController.php(359): XenForo_FrontController->_handleControllerResponse(NULL, 'NixFifty_Ticket...', 'Index')
#1 /var/www/clients/client180/web812/web/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#2 /var/www/clients/client180/web812/web/index.php(13): XenForo_FrontController->run()
#3 {main}

Request State
Array
(
    [url] => https://www.mywebsite.com/tickets/member
    [_GET] => Array
        (
            [/tickets/member] => 
        )

    [_POST] => Array
        (
        )

)
 
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