Please upgrade to 0.9.1 as a workaround to connection issues to lemmy.world.
Lemmy 0.18 broke direct connection to the Lemmy API from web clients with a very strange merge request two weeks ago. I have no idea what the motive was for this to be merged. Suffice it to say, it's been the source of a ton of headache today. https://github.com/LemmyNet/lemmy/pull/3191