Debug data caught in page script

I have been having issues with a site since I migrated it to a new server. I did turn on the debug script to see did it help, but it didn’t.

Now however there are issues with timthumb generated thumbnails – if you look at this link https://www.thesecretgardener.com/home/6324/general/burgon-ball-knee-pad/ you will see a pixelated image – but it is because it is unable to render because of having the error log caught up in it. The code it is calling looks like this:

<img src="https://www.thesecretgardener.com/home/wp-content/plugins/wp-checkout/vendors/timthumb.php?src=wp-content/uploads/wp-checkout/images/burgon-ball-knee-pad-1372097107.jpg&w=250&h=250&q=<font color=ff0000>Notice: attribute_escape is <strong>deprecated</strong> since version 2.8! Use esc_attr() instead. in /usr/local/pem/vhosts/251721/webspace/httpdocs/thesecretgardener.com/home/wp-includes/functions.php on line 2841</font>80">

Has anyone ever see this happen before – how can I get the error logs out of the installation?