There is currently an issue with Toolforge's image registry (Harbor) due to its database being out of space.
This affects the Toolforge build service, meaning no new builds can be started, and no images can currently be pulled from the registry. Currently running tools should be unaffected.
We are actively working on the issue and will update you here. Sorry for the downtime!
-- Slavina Stefanova (she/her) Software Engineer | Developer Experience
Wikimedia Foundation