what does this error mean

[photogifts]

what does this error mean just got it out of blue

 

 

Warning: Cannot modify header information - headers already sent by (output started at /home/photogif/public_html/catalog/includes/languages/english.php:723) in /home/photogif/public_html/catalog/includes/functions/general.php on line 29

[Flyer5]

what does this error mean just got it out of blue

Warning: Cannot modify header information - headers already sent by (output started at /home/photogif/public_html/catalog/includes/languages/english.php:723) in /home/photogif/public_html/catalog/includes/functions/general.php on line 29

 

 

have you been installing a new contribution? or uploading files? quite often this error comes from uploading a catalog file to the admin side and vice versa, im not saying this is dfefinately the cause, but it may be, but without more info its difficult to say.

 

F5

[photogifts]

i cant think what i done

 

heres the website www.photogiftshop.co.uk

 

its when i got to my account on top nav bar and when i try to check out