I was uploading an image for a task using my mobile browser. The upload failed as the connection was unstable and hence I got an error message. The error message took up the whole screen as it was showing a lot of content that doesn't make up much meaning for the user. Moreover it didn't go off even after a few minutes. Please change the way how error messages are displayed in Phabricator to something that's more meaningful and that doesn't annoy the user.
Screen shot of Phabricator showing error message