Warning: A non-numeric value encountered in system/modules/core/library/Contao/Picture.php on line 241
#0 system/modules/core/library/Contao/Picture.php(241): __error(2, 'A non-numeric v...', '/var/www/vhosts...', 241, Array)
#1 system/modules/core/library/Contao/Picture.php(198): Contao\Picture->getTemplateDataSource(Object(stdClass))
#2 system/modules/core/library/Contao/Controller.php(1495): Contao\Picture->getTemplateData()
#3 system/modules/core/elements/ContentImage.php(69): Contao\Controller::addImageToTemplate(Object(Contao\FrontendTemplate), Array)
#4 system/modules/core/elements/ContentElement.php(260): Contao\ContentImage->compile()
#5 system/modules/core/elements/ContentImage.php(60): Contao\ContentElement->generate()
#6 system/modules/core/library/Contao/Controller.php(476): Contao\ContentImage->generate()
#7 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement(Object(Contao\ContentModel), 'main')
#8 system/modules/core/modules/Module.php(282): Contao\ModuleArticle->compile()
#9 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#10 system/modules/core/modules/ModuleArticle.php(287): Contao\ModuleArticle->generate()
#11 system/modules/core/library/Contao/Controller.php(391): Contao\ModuleArticle->generatePdf()
#12 system/modules/core/library/Contao/Controller.php(223): Contao\Controller::getArticle(Object(Contao\ArticleModel))
#13 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#14 system/modules/core/controllers/FrontendIndex.php(267): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#15 index.php(20): Contao\FrontendIndex->run()
#16 {main}

Warning: Illegal string offset 'url' in vendor/tecnickcom/tcpdf/tcpdf.php on line 18807
#0 vendor/tecnickcom/tcpdf/tcpdf.php(18807): __error(2, 'Illegal string ...', '/var/www/vhosts...', 18807, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(18278): TCPDF->openHTMLTagHandler(Array, 27, 0)
#2 system/modules/core/modules/ModuleArticle.php(388): TCPDF->writeHTML(' 
#0 vendor/tecnickcom/tcpdf/tcpdf.php(18807): __error(2, 'Illegal string ...', '/var/www/vhosts...', 18807, Array) #1 vendor/tecnickcom/tcpdf/tcpdf.php(18278): TCPDF->openHTMLTagHandler(Array, 52, 0) #2 system/modules/core/modules/ModuleArticle.php(388): TCPDF->writeHTML('
#0 vendor/tecnickcom/tcpdf/tcpdf.php(18807): __error(2, 'Illegal string ...', '/var/www/vhosts...', 18807, Array) #1 vendor/tecnickcom/tcpdf/tcpdf.php(18278): TCPDF->openHTMLTagHandler(Array, 89, 0) #2 system/modules/core/modules/ModuleArticle.php(388): TCPDF->writeHTML('
#0 [internal function]: __error(2, 'Cannot modify h...', '/var/www/vhosts...', 7645, Array) #1 vendor/tecnickcom/tcpdf/tcpdf.php(7645): header('Content-Descrip...') #2 system/modules/core/modules/ModuleArticle.php(392): TCPDF->Output('herbststudienta...', 'D') #3 system/modules/core/library/Contao/Controller.php(391): Contao\ModuleArticle->generatePdf() #4 system/modules/core/library/Contao/Controller.php(223): Contao\Controller::getArticle(Object(Contao\ArticleModel)) #5 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main') #6 system/modules/core/controllers/FrontendIndex.php(267): Contao\PageRegular->generate(Object(Contao\PageModel), true) #7 index.php(20): Contao\FrontendIndex->run() #8 {main}
TCPDF ERROR: Some data has already been output to browser, can't send PDF file