i'm having trouble with uploading images on my mediawiki, after i uploaded an picture with jpg or png tail i always have this bug :
Error creating thumbnail: convert: no decode delegate for this image format `JPG' @ error/constitute.c/ReadImage/556. convert: no images defined `/var/folders/j9/5b28t03x40x43m8nzs2tkcc00000gn/T//transform_6517b43fe0e8.jpg' @ error/convert.c/ConvertImageCommand/3300. Error code: 1
Could anyone have idea ? im really appreciated for any hints and advices .