+ unless (-f $filename) {
+ $::lxdebug->message(LXDebug::WARN(), "_convert_pdf_to_png failed, no file found: $filename");
+ return;
+ }
+ # quotemeta for storno case "storno\ zu\ 1020" *nix only
+ my $command = 'pdftoppm -singlefile -scale-to ' . $size . ' -png' . ' ' . quotemeta($filename) . ' ' . $sfile->file_name;