Code:
InvalidArgumentException:
Invalid language file name "tl_content 2"
at vendor/contao/core-bundle/src/Resources/contao/library/Contao/System.php:459
at Contao\System::loadLanguageFile('tl_content 2')
(vendor/contao/core-bundle/src/Resources/contao/dca/tl_user_group.php:411)
at tl_user_group->getExcludedFields(object(DC_Table))
(vendor/contao/core-bundle/src/Resources/contao/library/Contao/Widget.php:1301)
at Contao\Widget::getAttributesFromDca(array('exclude' => false, 'search' => true, 'inputType' => 'checkbox', 'options_callback' => array('tl_user_group', 'getExcludedFields'), 'eval' => array('multiple' => true, 'size' => 36, 'required' => false), 'sql' => 'blob NULL', 'label' => array('Erlaubte Felder', 'Hier können Sie festlegen, welche Felder bearbeitet werden dürfen.'), 'orig_exclude' => true), 'alexf', null, 'alexf', 'tl_user_group', object(DC_Table))
(vendor/contao/core-bundle/src/Resources/contao/classes/DataContainer.php:319)
at Contao\DataContainer->row('{title_legend},name;{modules_legend},modules,themes;{elements_legend},elements,fields;{pagemounts_legend},pagemounts,alpty;{filemounts_legend},filemounts,fop;{imageSizes_legend},imageSizes;{forms_legend},forms,formp;{faq_legend},faqs,faqp;{news_legend},news,newp,newsfeeds,newsfeedp;{calendars_legend},calendars,calendarp,calendarfeeds,calendarfeedp;{newsletter_legend},newsletters,newsletterp;{amg_legend},amg;{alexf_legend:hide},alexf;{account_legend},disable,start,stop')
(vendor/contao/core-bundle/src/Resources/contao/drivers/DC_Table.php:1979)
at Contao\DC_Table->edit()
(vendor/contao/core-bundle/src/Resources/contao/classes/Backend.php:644)
at Contao\Backend->getBackendModule('group', null)
(vendor/contao/core-bundle/src/Resources/contao/controllers/BackendMain.php:162)
at Contao\BackendMain->run()
(vendor/contao/core-bundle/src/Controller/BackendController.php:48)
at Contao\CoreBundle\Controller\BackendController->mainAction()
(vendor/symfony/http-kernel/HttpKernel.php:158)
at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), 1)
(vendor/symfony/http-kernel/HttpKernel.php:80)
at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), 1, true)
(vendor/symfony/http-kernel/Kernel.php:201)
at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
(web/index.php:31)
Wirklich schlau werde ich da jedoch auch nicht draus