Bug overview description.
I'm trying upvoting and favoriting posts by API and I can't for some reason.
What part(s) of the site page(s) are affected?
JSON API (and XML API for upvote)
What is the expected behavior?
https://e621.net/favorite/create.json?login=Granberia&password_hash=correct_hash&id=1541656 - favorite post #1541656

https://e621.net/post/vote.json?score=1&login=Granberia&password_hash=correct_hash&id=1541656 - upvote post #151541656

What actual behavior is given instead?
First request - 400 error
Second request - 404 error. In browser it is redirected to https://e621.net/post/show?id=%23%3CProc%3A0x00000004cab828%40%2Fhome%2Fe621%2Fe621-production%2Freleases%2F20160126060000%2Fapp%2Fcontrollers%2Fpost_controller.rb%3A8+%28lambda%29%3E
Time of incident (if applicable).
Today
Can you reproduce the bug every time?
Yep.
What steps did you take to replicate this bug?
Tried both python script and directly in browser.
Errors or other messages returned (if any).
First request - 400 error
Second request - 404 error