Blender Version
Broken: 2.8 f807371c3e2

Short description of error
When sending something to the renderfarm via Flamenco and hitting the "Render on Flamenco" button while there is at least one object in the file with a missing/broken link, it fails. The loading icon appears fro a second and then nothing happens.

Example File
On snv in the spring project: /media/data/spring/scenes/01-opening/01_010_A/bug_report.blend