https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=37978 --- Comment #21 from Jonathan Druart <jonathan.druart@gmail.com> --- You have a lot of those warnings: Wide character (U+3B5) in substitution (s///) at /usr/lib/x86_64-linux-gnu/perl5/5.36/Template/Filters.pm Does your filename only contain Greek characters? Can you try to rename the file with ASCII chars only? This is the faral error: AH01215: stderr from /usr/share/koha/intranet/cgi-bin/tools/upload-cover-image.pl: not found: No such file or directory at /usr/lib/x86_64-linux-gnu/perl5/5.36/GD/Image.pm line 100., referer: http://intra.atpf.gr:8080/cgi-bin/koha/tools/upload-cover-image.pl?itemnumber=3269&filetype=image If still working, do you see the "Wide character" warnings? If so to debug I would add a warn there: Koha/UploadedFile.pm 115 sub file_handle { 116 my ( $self ) = @_; 117 warn $self->full_path; -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.