Fatal error: Uncaught Mpdf\MpdfException: Data has already been sent to output, unable to output PDF file in /www/htdocs/w0172d05/wortreich-texten.de/wp-content/plugins/dk-pdf/vendor/mpdf/mpdf/src/Mpdf.php:9292 Stack trace: #0 /www/htdocs/w0172d05/wortreich-texten.de/wp-content/plugins/dk-pdf/includes/dkpdf-functions.php(212): Mpdf\Mpdf->Output('B2C-Marketing.p...', 'I') #1 /www/htdocs/w0172d05/wortreich-texten.de/wp-includes/class-wp-hook.php(286): dkpdf_output_pdf(Object(WP)) #2 /www/htdocs/w0172d05/wortreich-texten.de/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #3 /www/htdocs/w0172d05/wortreich-texten.de/wp-includes/plugin.php(515): WP_Hook->do_action(Array) #4 /www/htdocs/w0172d05/wortreich-texten.de/wp-includes/class-wp.php(728): do_action_ref_array('wp', Array) #5 /www/htdocs/w0172d05/wortreich-texten.de/wp-includes/functions.php(964): WP->main('') #6 /www/htdocs/w0172d05/wortreich-texten.de/wp-blog-header.php(16): wp() #7 /www/htdocs/w0172d05/wortreich-texten.de/index.php(17): require('/ in /www/htdocs/w0172d05/wortreich-texten.de/wp-content/plugins/dk-pdf/vendor/mpdf/mpdf/src/Mpdf.php on line 9292