FPDF error: Some data has already been output, can't send PDF file

[alpaca]

I have checked all current threads on this and none of the fixes work.

Whenever a customer logs on and wants to check his orders as a pdf, it gives this error.

FPDF error: Some data has already been output, can't send PDF file

Presta team, please could help?

[Zenzation]

Same problem! Can anyone help? I think the problem is with UTF-8...

[tomerg3]

Did you modify any of the PDF code?

It sounds like there is something that is being outputted to the screen before the PDF header, which is causing the issue.

[Zenzation]

A men called Johan in France fixed our problem by doing this:

Add this to admin/pdf.php:

ob_end_clean ();

Just before:

if (isset( $_GET[ 'pdf' ] ))

And it works!

[alpaca]

I tried this and it does not work Zenzation.

Are you sure this is all the code you need to add?

[mikro]

Did you changed the logo?

[Straigh&Alert]

same problem, and I've changed the logo.
The problème could come from that change ?

'cause i've already managed to display the pdf invoice with this new logo :/

[Straigh&Alert]

I've found the solution here :
http://www.prestashop.com/forums/viewthread/28190/

at least it works for me
i had 2 white space after the closing tag in product.php ( in classes)

[sillasymonturas]

I had the same problem. I couldn't print my PDF invoices. I got that error.

Finally I found the page http://prestashopdeveloperstips.blogspot.com.es/2012/03/fpdf-error-some-data-has-already-been.html

It works for us !!

[Ckapone]

Hi,

Just to tell you many thanks for the solution

 

Ckarone