bipface

it's suspected that the vertical bar (`|`) is the culprit, however escaping it as `%7C` still yields the same error.

another example i encountered (attached), the response is `422 Unprocessable Entity` -- `{"errors":{"base":["'/' in 'test.zip' can't start with '/'"]}}`, however the `#notice` element which appears is just empty:  [test.zip](https://github.com/danbooru/danbooru/files/11118725/test.zip)