Going to https://musicbrainz.org/instruments with the UI set to a language other than English results in the following error:

Error: Domain `attributes` was not found.
at Jed.dcnpgettext (/home/musicbrainz/musicbrainz-server/node_modules/jed/jed.js:158:13)
at Jed.dpgettext (/home/musicbrainz/musicbrainz-server/node_modules/jed/jed.js:110:17)
at /home/musicbrainz/musicbrainz-server/root/static/scripts/common/i18n/wrapGettext.js:48:36
at /home/musicbrainz/musicbrainz-server/root/instrument/List.js:54:18
at Array.map (native)
at InstrumentList (/home/musicbrainz/musicbrainz-server/root/instrument/List.js:52:26)
at resolve (/home/musicbrainz/musicbrainz-server/node_modules/react-dom/cjs/react-dom-server.node.development.js:2102:14)
at ReactDOMServerRenderer.render (/home/musicbrainz/musicbrainz-server/node_modules/react-dom/cjs/react-dom-server.node.development.js:2260:22)
at ReactDOMServerRenderer.read (/home/musicbrainz/musicbrainz-server/node_modules/react-dom/cjs/react-dom-server.node.development.js:2234:19)
at Object.renderToStaticMarkup (/home/musicbrainz/musicbrainz-server/node_modules/react-dom/cjs/react-dom-server.node.development.js:2512:25)
at getResponse (/home/musicbrainz/musicbrainz-server/root/server/response.js:69:31)
at Socket.<anonymous> (/home/musicbrainz/musicbrainz-server/root/server/createServer.js:69:31)
at bound (domain.js:280:14)
at Socket.runBound (domain.js:293:12)
at emitOne (events.js:96:13)
at Socket.emit (events.js:191:7)
at readableAddChunk (_stream_readable.js:178:18)
at Socket.Readable.push (_stream_readable.js:136:10)
at Pipe.onread (net.js:560:20)

I’m pretty sure it did work earlier today.