random NoClassDefFoundError: org/apache/log4j/Layout

[danischroeter]

hi there

until today scalaxb worked fine for me but (I really have no idea why) it started failing today with

[error] java.lang.NoClassDefFoundError: org/apache/log4j/Layout
[error]         at sbtscalaxb.ScalaxbCompile$.$anonfun$apply$1(ScalaxbCompile.scala:22)
[error]         at scala.Option.map(Option.scala:230)
[error]         at sbtscalaxb.ScalaxbCompile$.compile$1(ScalaxbCompile.scala:20)
[error]         at sbtscalaxb.ScalaxbCompile$.$anonfun$apply$4(ScalaxbCompile.scala:30)
[error]         at sbtscalaxb.ScalaxbCompile$.$anonfun$apply$4$adapted(ScalaxbCompile.scala:29)
[error]         at sbt.util.Tracked$.$anonfun$outputChangedW$1(Tracked.scala:128)
[error]         at sbtscalaxb.ScalaxbCompile$.apply(ScalaxbCompile.scala:36)
[error]         at sbtscalaxb.ScalaxbPlugin$.$anonfun$baseScalaxbSettings$7(ScalaxbPlugin.scala:41)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error]         at sbt.Execute.work(Execute.scala:291)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
[error]         at java.base/java.lang.Thread.run(Thread.java:832)
[error] Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Layout
[error]         at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:435)
[error]         at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
[error]         at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
[error]         at sbtscalaxb.ScalaxbCompile$.$anonfun$apply$1(ScalaxbCompile.scala:22)
[error]         at scala.Option.map(Option.scala:230)
[error]         at sbtscalaxb.ScalaxbCompile$.compile$1(ScalaxbCompile.scala:20)
[error]         at sbtscalaxb.ScalaxbCompile$.$anonfun$apply$4(ScalaxbCompile.scala:30)
[error]         at sbtscalaxb.ScalaxbCompile$.$anonfun$apply$4$adapted(ScalaxbCompile.scala:29)
[error]         at sbt.util.Tracked$.$anonfun$outputChangedW$1(Tracked.scala:128)
[error]         at sbtscalaxb.ScalaxbCompile$.apply(ScalaxbCompile.scala:36)
[error]         at sbtscalaxb.ScalaxbPlugin$.$anonfun$baseScalaxbSettings$7(ScalaxbPlugin.scala:41)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error]         at sbt.Execute.work(Execute.scala:291)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
[error]         at java.base/java.lang.Thread.run(Thread.java:832)

The same sbt build works on our buildsystem and for my colleagues. The exact same project worked for me before.
I already redownloaded all dependencies etc.

Additionally adding libraryDependencies += "log4j" % "log4j" % "1.2.17" to my build also did not help. But log4j should be needed anyway only for the plugin to run.

[eed3si9n]

You might be missing some specific version of log4j? Do you have any machine-specific plugins you use for example to load things into IDEs?

[danischroeter]

I already checked that log4j is downloaded and present (coursier dir).
I also already disabled all custom plugins but without any change...