问题 Just pushed redmine to the heroku platform, though I can't get the backlog-plugin to work, it works just fine locally. I have pushed the local database to heroku aswwell. 回答1: Heroku's public directory is not writable. But a default Redmine assumes/requires so, as on start of the app server it copies static assets from the plugins (like images, javascripts, css) to the public/plugin_assets directory. On Heroku, this obviously fails. And as backlogs relies heavily on javascript, it's really