Template talk:Tl

Why is there an error on the template page stating "Error: image is invalid or non-existent" ??? Another question related to this template: When I am editing my user talk page, under the save options is a message stating the Template:T1 is used on the page (my talk page). Help me understand what this means because I don't have a transcluded documentation page being used on my talk page. Fran 23:01, 18 November 2009 (UTC)