Fatal error: Uncaught Exception: tFPDF error: Some data has already been output, can't send PDF file (output started at /usr/www/users/mgvozb/mgvo-prod/php-libs/basic_fkt.php:350) in /usr/www/users/mgvozb/mgvo-prod/php-libs/extpackpdf/vendor/setasign/tfpdf/tfpdf.php:277 Stack trace: #0 /usr/www/users/mgvozb/mgvo-prod/php-libs/extpackpdf/vendor/setasign/tfpdf/tfpdf.php(1257): tFPDF->Error() #1 /usr/www/users/mgvozb/mgvo-prod/php-libs/extpackpdf/vendor/setasign/tfpdf/tfpdf.php(1207): tFPDF->_checkoutput() #2 /usr/www/users/mgvozb/mgvo-prod/php-libs/_classes/PDFF.php(314): tFPDF->Output() #3 /usr/www/users/mgvozb/mgvo-prod/php-libs/print_fkt.php(71): PDFF->HandleOutput() #4 /usr/www/users/mgvozb/mgvo-prod/mgv-libs/mgvbrief_fkt.php(449): print_pdfdoc() #5 /usr/www/users/mgvozb/mgvo-prod/mgv/events/vkalliste.php(19): kal_kalliste() #6 {main} thrown in /usr/www/users/mgvozb/mgvo-prod/php-libs/extpackpdf/vendor/setasign/tfpdf/tfpdf.php on line 277