Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1522)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1545)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1567)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1593)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1617)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1641)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1665)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1689)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1713)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1737)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1761)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1783)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: array_push() expects parameter 1 to be array, null given in vendor/tecnickcom/tcpdf/tcpdf.php on line 16925 
#0 [internal function]: __error(2, 'array_push() ex...', '/www/htdocs/w01...', 16925, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(16925): array_push(NULL, 1807)
#2 vendor/tecnickcom/tcpdf/tcpdf.php(17206): TCPDF->getHtmlDomArray(' 
generatePdf()
#5 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#6 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#7 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#8 index.php(20): Contao\FrontendIndex->run()
#9 {main}

Warning: Cannot modify header information - headers already sent by (output started at /www/htdocs/w014ee16/carolinum.net/system/helper/functions.php:65) in vendor/tecnickcom/tcpdf/tcpdf.php on line 7646 
#0 [internal function]: __error(2, 'Cannot modify h...', '/www/htdocs/w01...', 7646, Array)
#1 vendor/tecnickcom/tcpdf/tcpdf.php(7646): header('Content-Descrip...')
#2 system/modules/core/modules/ModuleArticle.php(392): TCPDF->Output('lehrerschaft-ne...', 'D')
#3 system/modules/core/library/Contao/Controller.php(399): Contao\ModuleArticle->generatePdf()
#4 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#5 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#6 system/modules/core/controllers/FrontendIndex.php(285): 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