Undefined property: WP_Post_Type::$taxonomy

(1/1) ErrorException

Undefined property: WP_Post_Type::$taxonomy

in frontend-links.php line 106
at RegisterExceptionHandler->handleError()in frontend-links.php line 106
at PLL_Frontend_Links->get_translation_url()in switcher.php line 98
at PLL_Switcher->get_link()in switcher.php line 149
at PLL_Switcher->get_elements()in switcher.php line 247
at PLL_Switcher->the_languages()in api.php line 39
at pll_the_languages()in HelperGeneral.php line 45
at HelperGeneral::getLanguageSwitcher()in Lumberjack.php line 33
at Lumberjack->addToContext()in class-wp-hook.php line 341
at WP_Hook->apply_filters()in plugin.php line 205
at apply_filters()in Timber.php line 269
at Timber::get_context()in HelperTimber.php line 12
at HelperTimber::createContext()in archive-tribe_events.php line 26
at ArchiveTribeEventsController->handle()
at call_user_func_array()in Invoker.php line 74
at Invoker->call()in WordPressControllersServiceProvider.php line 87
at WordPressControllersServiceProvider->Rareloop\Lumberjack\Providers\{closure}()in Dispatcher.php line 114
at Dispatcher->mindplay\middleman\{closure}()
at call_user_func()in Delegate.php line 38
at Delegate->handle()in Dispatcher.php line 59
at Dispatcher->handle()in Dispatcher.php line 75
at Dispatcher->dispatch()in WordPressControllersServiceProvider.php line 92
at WordPressControllersServiceProvider->handleRequest()in WordPressControllersServiceProvider.php line 35
at WordPressControllersServiceProvider->handleTemplateInclude()in class-wp-hook.php line 341
at WP_Hook->apply_filters()in plugin.php line 205
at apply_filters()in template-loader.php line 114
at require_once('/home/newpoznan/domains/poznan.pan.pl/public_html/web/wp/wp-includes/template-loader.php')in wp-blog-header.php line 19
at require('/home/newpoznan/domains/poznan.pan.pl/public_html/web/wp/wp-blog-header.php')in index.php line 7