/var/lang/lib/node_modules/npm/node_modules/undici/lib/web/fileapi
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
'use strict' module.exports = { kState: Symbol('FileReader state'), kResult: Symbol('FileReader result'), kError: Symbol('FileReader error'), kLastProgressEventFired: Symbol('FileReader last progress event fired timestamp'), kEvents: Symbol('FileReader events'), kAborted: Symbol('FileReader aborted')}