Hello @Andy87
This was happening at tool submission? The server was probably just busy, or this happened during short incident window earlier this week. Please try again now.
If you search with that error message here, you’ll find other Q&A where this was the solution, too.
Past and ongoing Galaxy Main https://usegalaxy.org and related server’s statuses and resources are tracked here: https://galaxyproject.statuspage.io/
Please find links to contact information for the public Huttenhower Galaxy server hosted at http://huttenhower.sph.harvard.edu/galaxy/ in the Galaxy directory here: https://galaxyproject.org/use/huttenhower-lab/
Thanks and our apologies if this was confusing!