Hi,
after I installed the plugin I'll get following error clicking on the small pdf icon (in the invoices menu).
Warning: Cannot modify header information - headers already sent by (output started at /Joomla/administrator/components/com_vminvoice/helpers/vminvoice.php:1) in /www/htdocs/w008b424/Joomla/administrator/components/com_vminvoice/tcpdf/tcpdf.php on line 6755
TCPDF ERROR: Some data has already been output to browser, can't send PDF file
Even on the default start page, the shop, etc. Since plugin installation I'll get this error. Sometimes whole site is not working (just white page). I set the joomla error handling to maximum, but there isn't another error shown.
if I unpublish the plugin everything works fine.
do you have any idea what is deploying this error?
Best regards
Stephan