While browsing to https://tools.wmflabs.org/add-information/?image=Cow.jpeg and https://tools.wmflabs.org/add-information/?language=commons&project=wikimedia&image=Cow.jpeg&doit=Do+it, I encountered the following text:
"The tools.wmflabs.org page isn’t working

tools.wmflabs.org is currently unable to handle this request.
500"