I am developing a instance plugin right now and for a reverse callback I am trying to add a PluginController class to add http routes.
As soon as I add this controller to the plugin uploading the plugin shows a ‘invalid plugin’.
This sounds like your baselining your plugin on an older plugin api version. What version of morpheus-plugin-api are you using as well as what version of morpheus are you applying the plugin to?
Ok so can you provide the exact error and the morpheus logs from when its loaded. it should show an exception that will tell us whats going on. a lot has changed since 5.4.2 due to some major grails updates and security updates for java 11