Attach Invoice Generates TCPDF ERROR

Hi,

This means that a notice or warning has already been sent to the browser before the plugin generates the PDF.
If you turn off the "error reporting" setting in the Joomla configuration is should prevent the problem.
Now the question is where is this notice/warning.
And that's hard to say as the notice/warning is not displayed because of the error from the TCPDF library.
The notice/warning should be logged in the error log of your PHP. So the best would be to monitor that log while you reproduce the problem.
What you can try is to add the code:
ob_clean();
before the line:
$html2pdf->Output($fileName.'.pdf','D');
in the file plugins/hikashop/attachinvoice/attachinvoice.php
That should remove the notice/warning message from the ouput buffer which should prevent TCPDF from stopping and displaying that error.

Hi,

Yes. We'll add that patch on our end. I first wanted your feedback to make sure it does the job.

Hi,

There are other patchs.
I would recommend first to download again the PDF invoice plugin on our website and install it on yours (if your order is less than 4 years old, the download link you received is still working and will get you the latest version of the plugin).
We fixed an empty popup issue 6 months ago so it might be the problem you have.

Hi,

Unzip it on your local computer. Upload the files/folders in your Joomla tmp folder via FTP. And finally, use the "install from folder" option of the Joomla installer.
That will circumvent the upload limitation.
Otherwise, you can also check with your hosting how to increase the PHP upload limit on your website. Normally, it requires changing a parameter in the php.ini of the server.