In T291055#7354432, @Aklapper wrote:

Hi @Hidayatsrf, thanks for taking the time to report this!

Removing MediaWiki-Configuration as this is not related to MediaWiki Core's configuration options, but to some website's configuration instead.

1. Firefox 92, I am logged in on Wikipedia.
2. I go to https://id.wikipedia.org/wiki/Istimewa:Preferensi#mw-prefsection-rendering and make sure Aktifkan Penampil Media is enabled
3. I go to https://id.wikipedia.org/wiki/Halaman_Utama?debug=true&safemode=1
4. I click on the image of Aziz Akhannouch
5. MediaViewer opens, as expected.

Cannot reproduce.

Similliar problem on idwiki, https://id.wikipedia.org/wiki/Berkas:Kementerian_Lingkungan_Hidup.svg can't be deleted with an error message: Kesalahan waktu menghapus berkas: Kesalahan yang tidak dikenal terjadi di backend penyimpanan "local-multiwrite".

from pywikibot import i18n

The result is:
$ python pwb.py shell
Welcome to the Pywikibot interactive shell!

import checkimages
site = pywikibot.Site('id', 'wikipedia')
i18n.translate(site, checkimages.nothing_notification)

Traceback (most recent call last):

File "<console>", line 1, in <module>

NameError: name 'i18n' is not defined

Uh, sorry, '.format' not '.import'

I am just localize it on idwiki, run using -commons -duplicates
-duplicatesreport. But it worked when I try change folowing line:
pywikibot.output(u"%s has only text and not the specific license..."

                 % self.imageName)
if hiddenTemplateFound and HiddenTN:
    notification = HiddenTN % self.imageName
elif nn:
    notification = nn % self.imageName

To:
pywikibot.output(u"{0} has only text and not the specific license..."

                 % self.imageName)
if hiddenTemplateFound and HiddenTN:
    notification = HiddenTN % self.imageName
elif nn:
    notification = nn .import (self.imageName)

Latest version from github, I am using python version 3.6.0, maybe the %s
no longer used?