I am working with a project in an intellij IDEA IDE based on maven. I can fulfill all the maven goals, but IntelliJ shows a lot of errors in the source code, for example, below:

Everything went perfectly a few hours ago. I do not understand why the IDE continues showing errors. When I rebuild or compile the whole project (CTRL + F9) or one scala class. I always get a success message:

I already configured the scala plugin before, so I don’t know what is going on.
thanks for the help
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