neilcsmith-net opened a new issue, #4411:
URL: https://github.com/apache/netbeans/issues/4411
### Body
The code introduced in #4391 to address #4044 causes a lot of error
notifications / NPE reports. Adding this to track for 15-rc2. Seems possibly
to only affect projects using Java modules.
Stack trace -
```
SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor
org.netbeans.modules.parsing.ui.indexing.errors.ErrorAnnotator$1
java.lang.NullPointerException: Cannot invoke "java.util.Set.stream()"
because "this.moduleLocations" is null
at
org.netbeans.modules.java.source.parsing.PatchModuleFileManager.fixLocation(PatchModuleFileManager.java:299)
at
org.netbeans.modules.java.source.parsing.PatchModuleFileManager.getJavaFileForInput(PatchModuleFileManager.java:259)
at
org.netbeans.modules.java.source.parsing.ProxyFileManager.getJavaFileForInput(ProxyFileManager.java:392)
at
com.sun.tools.javac.code.ModuleFinder.getModuleInfoFromLocation(ModuleFinder.java:285)
at
com.sun.tools.javac.code.ModuleFinder.findSingleModule(ModuleFinder.java:200)
```
### Committer
- [X] I acknowledge that I am a maintainer/committer in the Apache NetBeans
project.
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