Hello,
We are planning to upgrade Foreman core develop branch to Rails 5.2 next Thursday, September 6th.
This means that any plugin that has not been updated to work with 5.2 will break against the development branch. Changes needed in most plugins are minimal to none, please see What you should know regarding Rails 5.2.0 and Foreman for further information (and update your status in the main post if you wish to share).
Please let me know if there are any concerns regarding this change or if you need assistance in fixing your plugin.