A DESCRIPTION OF THE PROBLEM :
Since a couple of weeks we're getting this compile error on SirixDB. I couldn't figure out what's the problem so far, as we've only changed Gradle plugin versions IIRC (https://github.com/sirixdb/sirix)

You can simply clone the project and compile or run the tests via Gradle or an IDE...

Compiling with JDK Java compiler API.
An exception has occurred in the compiler (15.0.2). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program, the following diagnostic, and the parameters passed to the Java compiler in your report. Thank you.
java.lang.NullPointerException: Cannot read field "name" because the return value of "java.util.Map.get(Object)" is null