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(1/1) ContextErrorException

Notice: Trying to access array offset on value of type bool

in med_facebookcover.php line 214
at Med_FacebookCover->hookHeader(array('cookie' => object(Cookie), 'cart' => object(Cart), 'altern' => 8))in Hook.php line 1007
at HookCore::coreCallHook(object(Med_FacebookCover), 'hookHeader', array('cookie' => object(Cookie), 'cart' => object(Cart), 'altern' => 8))in Hook.php line 431
at HookCore::callHookOn(object(Med_FacebookCover), 'Header', array('cookie' => object(Cookie), 'cart' => object(Cart), 'altern' => 8))in Hook.php line 944
at HookCore::exec('displayHeader')in FrontController.php line 598
at FrontControllerCore->initContent()in ProductController.php line 417
at ProductControllerCore->initContent()in Controller.php line 306
at ControllerCore->run()in Dispatcher.php line 525
at DispatcherCore->dispatch()in index.php line 28