1.1.1 -> 1.2.1 upgrade issue: java.lang.NoClassDefFoundError

[lululombard]

Hello!

I'm trying to upgrade from Lingua 1.1.1 to 1.2.1, but I get the following exception after the upgrade:

java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError
        at java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:605) ~[?:?]
        at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:981) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector.computeLanguageConfidenceValues(LanguageDetector.kt:160) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector.detectLanguageOf(LanguageDetector.kt:72) ~[?:?]
        at org.redcraft.redcraftchat.detection.services.Lingua.getLanguage(Lingua.java:39) ~[?:?]
        at org.redcraft.redcraftchat.detection.DetectionManager.getLanguage(DetectionManager.java:14) ~[?:?]
        at org.redcraft.redcraftchat.translate.TranslationManager.getSourceLanguage(TranslationManager.java:84) ~[?:?]
        at org.redcraft.redcraftchat.bridge.MinecraftDiscordBridge.broadcastMessage(MinecraftDiscordBridge.java:107) ~[?:?]
        at org.redcraft.redcraftchat.bridge.MinecraftDiscordBridge.broadcastMessage(MinecraftDiscordBridge.java:89) ~[?:?]
        at org.redcraft.redcraftchat.runnables.MinecraftServerStatusWatcherTask.handleServerStatusChange(MinecraftServerStatusWatcherTask.java:51) ~[?:?]
        at org.redcraft.redcraftchat.runnables.MinecraftServerStatusWatcherTask.run(MinecraftServerStatusWatcherTask.java:60) ~[?:?]
        at net.md_5.bungee.scheduler.BungeeTask.run(BungeeTask.java:66) ~[server.jar:git:Waterfall-Bootstrap:1.19-R0.1-SNAPSHOT:42d9c68:500]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.lang.NoClassDefFoundError
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) ~[?:?]
        at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
        at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?]
        at java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:564) ~[?:?]
        at java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:604) ~[?:?]
        ... 14 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.github.pemistahl.lingua.internal.TrainingDataLanguageModel
        at com.github.pemistahl.lingua.api.LanguageDetector$Companion.loadLanguageModel(LanguageDetector.kt:531) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector$Companion.loadLanguageModels(LanguageDetector.kt:520) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector$Companion.access$loadLanguageModels(LanguageDetector.kt:501) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector.lookUpNgramProbability-as5wtIs$lingua(LanguageDetector.kt:467) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector.computeSumOfNgramProbabilities$lingua(LanguageDetector.kt:442) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector.computeLanguageProbabilities$lingua(LanguageDetector.kt:429) ~[?:?]
        at com.github.pemistahl.lingua.api.LanguageDetector.computeLanguageConfidenceValues$lambda-4$lambda-3(LanguageDetector.kt:142) ~[?:?]
        at java.util.concurrent.ForkJoinTask$AdaptedInterruptibleCallable.exec(ForkJoinTask.java:1461) ~[?:?]
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?]
        at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?]
        at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?]
        at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?]
        at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?]

Here's my implementation of Lingua in my project: https://github.com/redcraft-org/RedCraftChat/blob/feature/first-release/src/main/java/org/redcraft/redcraftchat/detection/services/Lingua.java
And here's my pom.xml (I probably reverted the Lingua version now, but otherwise everything else is the same): https://github.com/redcraft-org/RedCraftChat/blob/feature/first-release/pom.xml

I'm running OpenJDK 17 and I include Lingua in my project using Maven, any idea what could cause this? Lingua 1.1.1 was working fine (except for some memory usage issues that 1.2.x seems to have fixed, but I can't get it to run). I tried mvn clean but nothing changed.

Any ideas?

Thanks!

[pemistahl]

Hi @lululombard, I think this is the same problem as in #144. Its cause is a bug in the Moshi JSON serialization library which I introduced in Lingua 1.2. I've just fixed it so I think this will resolve your problems, too. I'm going to release Lingua 1.2.2 soon which includes this fix.

[lululombard]

Thanks a lot, @pemistahl!

Lingua 1.2.2 totally fixed the issue including the memory issues I had with 1.1.x

Long live Lingua!