Create activities cannot be fetched

[vpzomtrrfrt]

Issue Summary

Posts' Create activities cannot be fetched, the server responds with a 404 error

Steps to Reproduce

1. Create a post to a community
2. Retrieve the Create ID from the outbox (or from requests sent to followers) (e.g. http://localhost:8536/activities/create/0931f34d-cd77-4726-bc2e-3d108f56421b)
3. Attempt to request the activity by URL

"NotFound" is returned

Technical details

• Please post your log: sudo docker-compose logs > lemmy_log.out.

Starting http server at 0.0.0.0:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536
federation enabled, host is localhost:8536

• What OS are you trying to install lemmy on?
  Arch Linux
• Any browser console errors?
  probably unrelated, but I do see "Uncaught TypeError: can't access property "postForm", this.state is undefined" when making the post

[Nutomic]

Fixed in https://yerbamate.ml/LemmyNet/lemmy/pulls/187.