From http://upload.beta.wmflabs.org/wikipedia/commons/thumb/8/83/Tracing_of_Field_Sheet_9_%28WOOS-18-3%29.tif/lossy-page1-472px-Tracing_of_Field_Sheet_9_%28WOOS-18-3%29.tif.jpg
Error creating thumbnail: /bin/bash: vips: command not found
------
[[ http://commons.wikimedia.beta.wmflabs.org/wiki/File:Test_djvu_rendering.djvu | This file ]] should have [[ http://upload.beta.wmflabs.org/wikipedia/commons/thumb/f/fd/Test_djvu_rendering.djvu/page1-383px-Test_djvu_rendering.djvu.jpg | thumbnails ]] like its copy on [[ https://commons.wikimedia.org/wiki/File:1915._%D0%A0%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9_%D1%8F%D0%B7%D1%8B%D0%BA.djvu | Commons ]].
Instead, the following error message is shown:
```
Error generating thumbnail
Error creating thumbnail: /bin/bash: pnmtojpeg: command not found
ddjvu: writing pnm file: Broken pipe
```