In Firefox I am unable to upload images either as the subject of a post, or as a part of the body using the image button. I receive the following error:

SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data client.js:2:1753277
    Hp https://infosec.pub/static/7197474/js/client.js:2
    (Async: promise callback)
    Hp https://infosec.pub/static/7197474/js/client.js:2
    n https://infosec.pub/static/7197474/js/client.js:2

I found a github issue about it but it's really old, so I'm thinking it's not that relevant, even though it pretty much describes the issue exactly:

https://github.com/LemmyNet/lemmy-ui/issues/403

There are some other issues in the lemmy backend repo:

https://github.com/LemmyNet/lemmy/issues?q=is%3Aissue+unexpected+character+at+line+1+column+1+is%3Aclosed

Anyone else noticing this or is it just me?

EDIT: Probably should have checked first but this happens on other instances running 0.18.1, so I guess it doesn't matter, seems to be an upstream issue.