Bad Slug Error

There has been a Troggle error.

A Cave, Entrance or QM has been referred to using a label (a 'slug') which does not work.

This is the bad slug: QM.DoesNotExist blockname is not empty string cave_id='1623-2023-ft-02' year=2023 qm_id='3' grade='' blockname='A2023-f3'

This is the previous page which had the bad slug reference on it:

It is also possible that the cave description page is being viewed using an alternative URL, so that the local links in the page to other parts of the cave do not work.
e.g. /cave/1623-161 is not the correct way of looking at Kaninchenhohle,
you should be using
/1623/161/top.htm instead.

If that is the case, tell a nerd that we haven't fixed the fault that we thought we had fixed.


What you should do now

Please report the error by emailing the nerds at with this information:

  1. The bad slug text written in red above.
  2. The previous page URL, also written in red above
  3. Go back to this previous page and see if you can tell whether the bad slug was in HTML text which had been written manually, or whether it appeared to be a programming error.