Fatal error: Uncaught Exception: FPDF error: Some data has already been output, can't send PDF file (output started at /var/www/vhosts/sotv.ch/httpdocs/application/modules/CoursePDF.php:116) in /var/www/vhosts/sotv.ch/httpdocs/application/libraries/fpdf/fpdf.php:261 Stack trace: #0 /var/www/vhosts/sotv.ch/httpdocs/application/libraries/fpdf/fpdf.php(1038): FPDF->Error('Some data has a...') #1 /var/www/vhosts/sotv.ch/httpdocs/application/libraries/fpdf/fpdf.php(989): FPDF->_checkoutput() #2 /var/www/vhosts/sotv.ch/httpdocs/application/modules/CoursePDF.php(119): FPDF->Output('I', 'SOTV-Kursprogra...') #3 /var/www/vhosts/sotv.ch/httpdocs/application/views/kurse/kurse.php(4): CoursePDF->generatePDF() #4 /var/www/vhosts/sotv.ch/httpdocs/application/modules/View.php(105): include('/var/www/vhosts...') #5 /var/www/vhosts/sotv.ch/httpdocs/application/views/layout/layout.html(90): View::get(Object(Navigation), Array) #6 /var/www/vhosts/sotv.ch/httpdocs/index.php(58): include('/var/www/vhosts...') #7 {main} thrown in /var/www/vhosts/sotv.ch/httpdocs/application/libraries/fpdf/fpdf.php on line 261