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Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /var/www/clients/client1/web8/web/modules/taxexempt/taxexempt.php:242 Stack trace: #0 /var/www/clients/client1/web8/web/modules/taxexempt/taxexempt.php(242): in_array() #1 /var/www/clients/client1/web8/web/classes/Hook.php(1083): Taxexempt->hookDisplayHeader() #2 /var/www/clients/client1/web8/web/override/classes/Hook.php(44): HookCore::coreCallHook() #3 /var/www/clients/client1/web8/web/override/classes/Hook.php(113): Hook::callHookOn_parent() #4 /var/www/clients/client1/web8/web/classes/Hook.php(989): Hook::callHookOn() #5 /var/www/clients/client1/web8/web/classes/controller/FrontController.php(633): HookCore::exec() #6 /var/www/clients/client1/web8/web/override/classes/controller/FrontController.php(38): FrontControllerCore->initContent() #7 /var/www/clients/client1/web8/web/controllers/front/listing/CategoryController.php(127): FrontController->initContent() #8 /var/www/clients/client1/web8/web/classes/controller/Controller.php(319): CategoryControllerCore->initContent() #9 /var/www/clients/client1/web8/web/classes/Dispatcher.php(510): ControllerCore->run() #10 /var/www/clients/client1/web8/web/override/classes/Dispatcher.php(297): DispatcherCore->dispatch() #11 /var/www/clients/client1/web8/web/index.php(28): Dispatcher->dispatch() #12 {main} thrown in /var/www/clients/client1/web8/web/modules/taxexempt/taxexempt.php on line 242