Please see the following screenshot:
There is a page Seznam dílů seriálu Simpsonovi with self-closing tag in template Šablona:Simpsonovi (29. řada), but the template link is red. Underneath there is a page Simpsonovi (29. řada) with the same self-closing tag. That red link is wrong, because in the Seznam dílů seriálu Simpsonovi page there is the whole article Simpsonovi (29. řada) transcluded.
The red link should lead to the article, not some non-existing template.