LaTeX Warning: No \author given.

Runaway argument?
{ecrire/public/balises.php\}\footnote {\url {http://core.spip.org/tra\ETC.
! Paragraph ended before \hyper@link@ was complete.
<to be read again> 
                   \par 
l.198 
      
I suspect you've forgotten a `}', causing me to apply this
control sequence to too much text. How can we recover?
My plan is to forget the whole thing and hope for the best.