I am currently unable to attach any files to any pages. Every time I am presented with an HTTP Error, whether it is dragging and dropping or selecting a file from my filesystem.
I have so far: restarted Confluence, restarted the server, verified Confluence's max filesize, verified my php's 'upload_max_filesize' and 'post_max_size', upgraded confluence.
On top of this nothing shows up in Confluence's logs (in Diagnostic mode).
A potentially related issue is that I am unable to update or install plugins from the marketplace (or modify licenses), but I am able to upload and uninstall them.
Any help would be appreciated. Thanks.