User error: ImageMagick error 1: convert: unable to open image `/var/www/esponprod/sites/default/files/attachments/Implementing smart specialisation in sparsely populated areas, Anja Gjrum.pdf': No such file or directory @ error/blob.c/OpenBlob/2712.
convert: no images defined `/var/www/esponprod/sites/default/files/pdfpreview/4024c9effb3eac943baf2ce504cb76d8.jpg' @ error/convert.c/ConvertImageCommand/3210.
in _imagemagick_convert_exec() (line 519 of /var/www/esponprod/sites/all/modules/imagemagick/imagemagick.module).
Warning: filesize(): stat failed for public://pdfpreview/4024c9effb3eac943baf2ce504cb76d8.jpg in file_save() (line 614 of /var/www/esponprod/includes/file.inc).
