Board Thread:Support Requests - Getting Technical/@comment-9179092-20130511081051/@comment-24155515-20170921202959

The template is referencing itself. (This comment in this thread details more on how that works.) You've basically put the syntax for using the template on the template's page and don't have any code to actually use the template. (In short, you put (plus the parameters as you would use them in a transclusion) on Template:Multiple image so that the page keeps trying to put itself inside itself.) Did you copy it from somewhere?

(I'm only responding to this because I didn't see a new thread for it.)