tag key interrupts page rendering

[Rem74]

I am trying to filter pages by tag value

~~DIR::ns1:ns2?noheader&tag=my_tag~~

but the current page isn't rendered correctly. Page rendering is interrupted after this line:

[lupo49]

Seems ok for me:

What did you receive when DokuWikis debug option is enabled?

[Rem74]

I've switched DokuWikis "allowdebug" option on but I didn't receive anything on a preview as well.