NPE SVGDiagram.setIgnoringClipHeuristic(boolean)" because "diagram" is null

[icyerasor]

With latest id("com.vanniktech.dependency.graph.generator") version "0.8.0" i get the following error:

./gradlew generateProjectDependencyGraph --stacktrace

> Configure project :integration
Build was configured to prefer settings repositories over project repositories but repository 'MavenRepo' was added by build file 'integration\build.gradle.kts'

> Task :generateProjectDependencyGraph FAILED
Generated SVG has not the expected format. There might be image size problems.
[Fatal Error] :-1:-1: Premature end of file.
Error processing svgSalamander://graph/
org.xml.sax.SAXParseException; Premature end of file.
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
        at com.kitfox.svg.SVGUniverse.loadSVG(SVGUniverse.java:608)
        at com.kitfox.svg.SVGUniverse.loadSVG(SVGUniverse.java:545)
        at com.kitfox.svg.SVGUniverse.loadSVG(SVGUniverse.java:502)
        at guru.nidi.graphviz.engine.SalamanderRasterizer.createDiagram(SalamanderRasterizer.java:43)
        at guru.nidi.graphviz.engine.SalamanderRasterizer.doRasterize(SalamanderRasterizer.java:31)
        at guru.nidi.graphviz.engine.SvgRasterizer.rasterize(SvgRasterizer.java:40)
        at guru.nidi.graphviz.engine.Renderer.toImage(Renderer.java:123)
        at guru.nidi.graphviz.engine.Renderer.toFile(Renderer.java:75)
        at guru.nidi.graphviz.engine.Renderer.lambda$toFile$4(Renderer.java:61)
        at guru.nidi.graphviz.engine.EngineResult.mapIO(EngineResult.java:72)
        at guru.nidi.graphviz.engine.Renderer.toFile(Renderer.java:59)
        at com.vanniktech.dependency.graph.generator.ProjectDependencyGraphGeneratorTask.run(ProjectDependencyGraphGeneratorTask.kt:34
        ....
        ....
FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':generateProjectDependencyGraph'.
> Cannot invoke "com.kitfox.svg.SVGDiagram.setIgnoringClipHeuristic(boolean)" because "diagram" is null

* Try:
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':generateProjectDependencyGraph'.
        ...
        ...
Caused by: java.lang.NullPointerException: Cannot invoke "com.kitfox.svg.SVGDiagram.setIgnoringClipHeuristic(boolean)" because "diagram" is null
        at guru.nidi.graphviz.engine.SalamanderRasterizer.createDiagram(SalamanderRasterizer.java:45)
        at guru.nidi.graphviz.engine.SalamanderRasterizer.doRasterize(SalamanderRasterizer.java:31)
        at guru.nidi.graphviz.engine.SvgRasterizer.rasterize(SvgRasterizer.java:40)
        at guru.nidi.graphviz.engine.Renderer.toImage(Renderer.java:123)
        at guru.nidi.graphviz.engine.Renderer.toFile(Renderer.java:75)
        at guru.nidi.graphviz.engine.Renderer.lambda$toFile$4(Renderer.java:61)
        at guru.nidi.graphviz.engine.EngineResult.mapIO(EngineResult.java:72)
        at guru.nidi.graphviz.engine.Renderer.toFile(Renderer.java:59)
        at com.vanniktech.dependency.graph.generator.ProjectDependencyGraphGeneratorTask.run(ProjectDependencyGraphGeneratorTask.kt:34)
        ...
        ...

BUILD FAILED in 1s
4 actionable tasks: 1 executed, 3 up-to-date

see full errorlog.txt
see generated .dot file project-dependency-graph.dot.txt

With id("com.vanniktech.dependency.graph.generator") version "0.7.0" it works (at least when I start with a fresh gradle deamon).

[katkoff]

builds with gradle commands generateDependencyGraph or generateProjectDependencyGraph finished with next error

Execution failed for task ':generateProjectDependencyGraph'.
> Cannot invoke "com.kitfox.svg.SVGDiagram.setIgnoringClipHeuristic(boolean)" because "diagram" is null

tried different versions:

classpath "com.vanniktech:gradle-dependency-graph-generator-plugin:0.8.0"
classpath "com.vanniktech:gradle-dependency-graph-generator-plugin:0.7.0"

same result

tried with fresh daemon also - the same

@vanniktech check it please

[vanniktech]

Hitting this also now in #228 - might be due to JDK 17.

Reported it here: nidi3/graphviz-java#249

[wverdese]

same here. Will this problem be fixed?

[xpenatan]

Hitting the same issue. looks like graphviz-java is a dead project to update to jdk17

[dees91]

Due to this problem, at this point the tool is not useful for most projects with current AGP (current AGP requires JDK17 which is also included along with the latest Android Studio).

Have you considered removing graphviz-java dependency and requiring the presence of an installed graphiz tool on the user's system?

[vanniktech]

Have you considered removing graphviz-java dependency and requiring the presence of an installed graphiz tool on the user's system?

It used to be like this but many users had problems. Or they didn't have it installed.

[tgyuuAn]

same here.... 😭 Will this problem be fixed?...?!

[alexandrucaraus]

I have the same error:
Run the gradle task from android studio which uses java 17, and also run from bash console where is installed java 21, similar outcome for both cases.
Please advice 🙏

[StefanSchrass]

Can confirm, that a donwgrade from 0.8.0 to 0.7.0 fixes the issue in an gradle project on openjdk-21.0.2.