TimescaleDB Docker upgrade: could not access file "$libdir/timescaledb-X.Y.Z"
Run ALTER EXTENSION timescaledb UPDATE; in every database where TimescaleDB is installed, including the postgres database, which people often forget (sometimes even template0 needs it). If you are jumping several versions at once, do transitional upgrades. The Docker images only ship the last ~5 minor versions' …
Problem outcome: unknown