The fix for this problem has been made (https://github.com/galaxyproject/galaxy/issues/5040) and will be applied to the Galaxy Main server very soon (likely today). I'll write back with an update once applied and tested.
Thanks for reporting the problem! Jen, Galaxy team
Update 12-01-17 2pm EST
Galaxy Main at https://usegalaxy.org has been updated.
Please rerun your job and let us know if problems continue. We are also testing today for a few bug fixes and will report back if any issues are still present.
Thanks! Jen, Galaxy team