Route 404 errors occurred for some users due to a Netlify Next.js runtime plugin conflict introduced during a production static build deployment. Build settings were updated to compile in pure static output mode, bypassing the conflicting runtime triggers. All routes verified live.

Alembic migrations were temporarily blocked during a deployment rollout due to connection pool transaction locks on the PostgreSQL master. The locking transactions were safely terminated and connection timeouts adjusted. All migrations completed successfully with no data loss.