Create a gallery for picture :
https://wiki.visionduweb.fr/index.php?title=Ecrire_avec_MediaWiki#Cr.C3.A9er_une_galerie_d.27images
From : https://www.mediawiki.org/wiki/Help:Images/fr#Taille_et_cadre
Not work 100%
Look my example please.
Click the button for show all thumb :
< (left picture) button (right picture) >
Now, you can't see any thumb, not work ! If you click the link, it's ok.
If i copy the link from the thumb, it's not ok, i have this : https://wiki.visionduweb.fr/5x
It's a code HTTP 5x ?
Or, a bug ?
There is my Vhosts :