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I'm following a Flutter course with The App Brewery and I'm starting to have problems recently with Java at Android Studio that I hadn't got before.

First of all I was requested to install JDK I don't know why because I did 15% of the course with no problem with java.

And now I'm receiving this message when trying to complie:

java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
FAILURE: Build failed with an exception.

* What went wrong:
Could not initialize class org.codehaus.groovy.reflection.ReflectionCache

The code for the app should be ok because is a non modified Git repository directly from the course.

Any idea?

Mark Rotteveel
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Miguel Gisbert
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