Error: Call to a member function getType() on null

Any idea how to solve these?

Code:

Error: Call to a member function getType() on null src/XF/Service/User/ProfileBannerService.php:193



Stack trace
#0 src/XF/Pub/Controller/AccountController.php(721): XF\Service\User\ProfileBannerService->updateBanner()
#1 src/XF/Mvc/Dispatcher.php(362): XF\Pub\Controller\AccountController->actionBanner(Object(XF\Mvc\ParameterBag))
#2 src/XF/Mvc/Dispatcher.php(264): XF\Mvc\Dispatcher->dispatchClass('XF:Account', 'Banner', Object(XF\Mvc\RouteMatch)...

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