Java – using eclipse to use Scala on Google App Engine

I'm trying to create a web application on pure Scala code I use the plug-in of the latest version of eclipse to create an App Engine web project Then I added Scala properties to the project I rewrite the standard java servlet generated by Google plug - in to scala servlet version Everything was fine and no Scala code errors were found But eclipse showed me some errors in my Scala servlet code, as follows:

This error was by com google. appengine. eclipse. Core plug-in generation I don't understand. Where can I fix this error?

Solution

In project properties – > builder, move Scala builder to the top of the list