Bug#811547: wiki.debian.org: /PageHits returns "execution failed: [unknown error handler name 'fallback:iso-8859-1']"

Package: wiki.debian.org
Severity: normal

Dear Maintainer,

Thanks for maintaining the Debian Wiki.

   * What led up to the situation?

I visited https://wiki.debian.org/PageHits to see the most visited pages in the
Debian wiki.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

Open a web browser and go to https://wiki.debian.org/PageHits

   * What was the outcome of this action?

The page is shown but the statistics are not shown:

This ranking shows how often a page was requested since logging began. It
provides just a dumb counter, i.e., every single page request counts as one
hit.

<<PageHits: execution failed [unknown error handler name 'fallback:iso-8859-1']
(see also the log)>>

   * What outcome did you expect instead?

The page including a ranking of wiki pages with their hitcounts.

Best regards
Laura Arjona Reina
https://wiki.debian.org/LauraArjona



-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 3.16.0-4-686-pae (SMP w/2 CPU cores)
Locale: LANG=es_ES.UTF-8, LC_CTYPE=es_ES.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)