etym.org doesn't work: backend is offline

[arewepluralcontributor]

Describe the bug
search hangs forever on http://etymon.org/website/etymon/index.html

console says:
2VM61:1 POST https://etymon-190009.appspot.com/search 404

it looks like your backend is offline

[Merterm]

We are having issues with our backend indeed. It may take time to put it back. Back-end code is available here: https://github.com/Merterm/Etymon/blob/master/code/Website/server/server.js We would appreciate help on this matter. Please feel free to modify the backend. Thank you.