500 – Internal Server Error

Debugging Info:

/var/www/html/passel2.unl.edu/src/App/Action/Feedback.php:29: Undefined array key "HTTP_REFERER"
#0 /var/www/html/passel2.unl.edu/src/App/Action/Feedback.php(29): Laminas\Stratigility\Middleware\ErrorHandler::Laminas\Stratigility\Middleware\{closure}()
#1 /var/www/html/passel2.unl.edu/src/App/Action/Feedback.php(20): App\Action\Feedback->handleGetRequest()
#2 /var/www/html/passel2.unl.edu/src/App/TemplatableAction.php(91): App\Action\Feedback->process2()
#3 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): App\TemplatableAction->process()
#4 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-router/src/Route.php(79): Mezzio\Middleware\LazyLoadingMiddleware->process()
#5 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-router/src/RouteResult.php(109): Mezzio\Router\Route->process()
#6 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-router/src/Middleware/DispatchMiddleware.php(32): Mezzio\Router\RouteResult->process()
#7 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Router\Middleware\DispatchMiddleware->process()
#8 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#9 /var/www/html/passel2.unl.edu/src/App/Auth/AuthMiddleware.php(72): Laminas\Stratigility\Next->handle()
#10 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): App\Auth\AuthMiddleware->process()
#11 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#12 /var/www/html/passel2.unl.edu/src/App/Middleware.php(60): Laminas\Stratigility\Next->handle()
#13 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): App\Middleware->process()
#14 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#15 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-helpers/src/UrlHelperMiddleware.php(38): Laminas\Stratigility\Next->handle()
#16 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Helper\UrlHelperMiddleware->process()
#17 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#18 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-router/src/Middleware/MethodNotAllowedMiddleware.php(59): Laminas\Stratigility\Next->handle()
#19 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Router\Middleware\MethodNotAllowedMiddleware->process()
#20 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#21 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-router/src/Middleware/ImplicitOptionsMiddleware.php(75): Laminas\Stratigility\Next->handle()
#22 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Router\Middleware\ImplicitOptionsMiddleware->process()
#23 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#24 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-router/src/Middleware/ImplicitHeadMiddleware.php(77): Laminas\Stratigility\Next->handle()
#25 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Router\Middleware\ImplicitHeadMiddleware->process()
#26 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#27 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-router/src/Middleware/RouteMiddleware.php(50): Laminas\Stratigility\Next->handle()
#28 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Router\Middleware\RouteMiddleware->process()
#29 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#30 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-session/src/SessionMiddleware.php(27): Laminas\Stratigility\Next->handle()
#31 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Session\SessionMiddleware->process()
#32 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#33 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio-helpers/src/ServerUrlMiddleware.php(27): Laminas\Stratigility\Next->handle()
#34 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Mezzio\Helper\ServerUrlMiddleware->process()
#35 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#36 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Middleware/ErrorHandler.php(129): Laminas\Stratigility\Next->handle()
#37 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Middleware/LazyLoadingMiddleware.php(26): Laminas\Stratigility\Middleware\ErrorHandler->process()
#38 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/Next.php(49): Mezzio\Middleware\LazyLoadingMiddleware->process()
#39 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(75): Laminas\Stratigility\Next->handle()
#40 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(64): Laminas\Stratigility\MiddlewarePipe->process()
#41 /var/www/html/passel2.unl.edu/vendor/laminas/laminas-httphandlerrunner/src/RequestHandlerRunner.php(73): Laminas\Stratigility\MiddlewarePipe->handle()
#42 /var/www/html/passel2.unl.edu/vendor/mezzio/mezzio/src/Application.php(53): Laminas\HttpHandlerRunner\RequestHandlerRunner->run()
#43 /var/www/html/passel2.unl.edu/public/index.php(28): Mezzio\Application->run()
#44 {main}