Liking an answer doesn't seem to work

Discovered this while playing around to get it to crash for #113 (closed). Looks like there's either a param missing or a slash too many.

2020-04-07T23:18:20.213 INFO [gunicorn] Not Found: /api/exam/setlike//
2020-04-07T23:18:20.213 INFO [gunicorn] [WARNING] Not Found: /api/exam/setlike//