Error message

User error: ImageMagick error 1: convert: unable to open image `/home/enews/public_html/sites/default/files/gallery/826_Jesse Ren_Cason_Moody Eilean Donan.jpg': No such file or directory @ error/blob.c/OpenBlob/2882. convert: no images defined `/home/enews/public_html/sites/default/files/styles/gallery_thumb_140x140/public/gallery/826_Jesse Ren_Cason_Moody Eilean Donan.jpg' @ error/convert.c/ConvertImageCommand/3235. in _imagemagick_convert_exec() (line 519 of /home/enews/public_html/sites/all/modules/imagemagick/imagemagick.module).