Library remains empty after sync

I just looked, and SQLite is having problems writing to /ps/tmp. Is this volume bind-mounted to a local disk?

2021-05-14T03:47:03.050Z main-25 error DbBackup(/ps/tmp/local-db/models/db.sqlite3) Error: Could not back up db /ps/tmp/local-db/models/db.sqlite3 -> /ps/tmp/local-db/models/backup/db.sql
ite3: SqliteError: code SQLITE_IOERR: disk I/O error¹⁶
SqliteError: disk I/O error
    at Immediate.step (/ps/app/node_modules/better-sqlite3/lib/methods/backup.js:43:29)
    at processImmediate (internal/timers.js:461:21) { from: 'DbBackup._backup() failed', srcDb: '/ps/tmp/local-db/models/db.sqlite3' }