MikeRoetgers marked all old repositories as private, so this breaks Composer. It’s fixed in 3.2.49, which makes me suspect you were on edge-major. Patch releases (3.2.48.x to 3.2.48.y) shouldn’t trigger a reversion to major… also likely what prompted your other query.
cpcmd scope:set cp.update-policy edge-major
upcp
Give that a whirl.