Warning: Undefined variable $itemDataMerged in /home/etangr/public_html/src/App/Controller/SiteMapController.php on line 57

Fatal error: Uncaught TypeError: array_merge(): Argument #2 must be of type array, null given in /home/etangr/public_html/src/App/Controller/SiteMapController.php:57 Stack trace: #0 /home/etangr/public_html/src/App/Controller/SiteMapController.php(57): array_merge(Array, NULL) #1 /home/etangr/public_html/src/App/Router/Dispatcher.php(40): AWD\Boilerplate\Controller\SiteMapController->index(Object(AWD\Boilerplate\Http\Request)) #2 /home/etangr/public_html/src/App/Router/Router.php(640): AWD\Boilerplate\Router\Dispatcher->dispatch(Object(AWD\Boilerplate\Router\Router), 'SiteMapControll...', 'index') #3 /home/etangr/public_html/src/App/Router/Router.php(585): AWD\Boilerplate\Router\Router->initController('SiteMapControll...', 'index') #4 /home/etangr/public_html/src/App/Router/Router.php(451): AWD\Boilerplate\Router\Router->loadController('SiteMapControll...', 'index') #5 /home/etangr/public_html/src/App/Router/Router.php(235): AWD\Boilerplate\Router\Router->createRoute(Array, '/sitemap.xml', Array) #6 /home/etangr/public_html/src/App/Router/Router.php(115): AWD\Boilerplate\Router\Router->addRoute(Array, '/sitemap.xml', Array) #7 /home/etangr/public_html/routes/web.php(7): AWD\Boilerplate\Router\Router->get('/sitemap.xml', Array) #8 /home/etangr/public_html/src/App/Boilerplate.php(57): require_once('/home/etangr/pu...') #9 /home/etangr/public_html/src/App/Boilerplate.php(41): AWD\Boilerplate\Boilerplate->registerApp() #10 /home/etangr/public_html/src/App/Boilerplate.php(19): AWD\Boilerplate\Boilerplate->registerComponents() #11 /home/etangr/public_html/index.php(53): AWD\Boilerplate\Boilerplate->init() #12 {main} thrown in /home/etangr/public_html/src/App/Controller/SiteMapController.php on line 57