Gradle: "Failed to retrieve project information" (Gradle 6.1.1)

[errael]

Apache NetBeans version

Apache NetBeans 16 release candidate

What happened

Considering a use for Glazed lists, I download https://github.com/glazedlists/glazedlists-tutorial. gw build works from the command line, There's an exception loading it under NetBeans. I haven't looked into the project itself, but this issue seems topical, may be a good example. Copying exception in next msg. FYI: @sdedic, @lkishalmi .

BTW: My interest in the project is running the examples; expect to update project to gradle 7.5.1

How to reproduce

Open the project in NetBeans.

Did this work correctly in an earlier version?

No / Don't know

Operating System

Linux harmony 5.19.16-76051916-generic #202210150742166605324422.04~cf07008 SMP PREEMPT_DYNAMIC Tue O x86_64 x86_64 x86_64 GNU/Linux

JDK

openjdk version "11.0.2" 2019-01-15 OpenJDK Runtime Environment 18.9 (build 11.0.2+9) OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode)

Apache NetBeans packaging

Apache NetBeans binary zip

Anything else

No response

Are you willing to submit a pull request?

No

Code of Conduct

Yes

[errael]

Line numbers from: Apache NetBeans IDE 16-rc4
Full traced is attached in later msg

INFO [org.netbeans.modules.gradle.loaders.GradleProjectLoaderImpl]: Load aiming FULL_ONLINE for Gradle: glazedlists-tutorial[FALLBACK]
Failed to retrieve project information for: /src/swingset/glazedlists-tutorial
Reason: java.lang.NullPointerException
java.lang.NullPointerException
	at org.netbeans.modules.gradle.tooling.NbProjectInfoBuilder.sinceGradleOrDefault(NbProjectInfoBuilder.java:1619)
	at org.netbeans.modules.gradle.tooling.NbProjectInfoBuilder.sinceGradle(NbProjectInfoBuilder.java:1624)
	at org.netbeans.modules.gradle.tooling.NbProjectInfoBuilder.access$100(NbProjectInfoBuilder.java:115)
	at org.netbeans.modules.gradle.tooling.NbProjectInfoBuilder$DependencyWalker.walkChildren(NbProjectInfoBuilder.java:1238)
	at org.netbeans.modules.gradle.tooling.NbProjectInfoBuilder$DependencyWalker.walkResolutionResult(NbProjectInfoBuilder.java:1178)

[errael]

This may demonstrate more of a problem than suspected. Seems Gradle support gets in a bad state that requires a restart of NetBeans.

1. Starting with fresh cachedir, start NetBeans. Open clean glazedlists-tutorial. Exception when resolve problems.
2. Add id 'application' plugin; remove apply plugin: 'java'`
3. On console do gradle wrapper --gradle-version 7.5.1
4. Project glazedlists-tutorial > ResolveProjectProblems > Resolve
   Observe NPE
5. Close glazedlists-tutorial, reopen still NPE
6. Restart NetBeans
   Observe glazedlists-tutorial loads OK

[errael]

Attaching full stack trace
log.txt