title: Play Framework Scala Hello-World fail on Ubuntu 20
body: <p>The basic Play Framework sample (play-scala-hello-world-tutorial) fails on Ubuntu 20 with OpenAdopt JDK but works fine on Macos. Is there something arry with my Linux setup?</p>
  <p>Per <a href="https://www.playframework.com/getting-started" rel="noreferrer">https://www.playframework.com/getting-started</a>) I...</p>
  <pre><code>&gt; git clone https://github.com/playframework/play-samples.git
  &gt; cd play-samples/play-scala-hello-world-tutorial
  &gt; sbt run  
      [info] welcome to sbt 1.4.3 (AdoptOpenJDK Java 16)
      [info] loading global plugins from /home/gp/.sbt/1.0/plugins
      [info] loading settings for project play-scala-hello-world-tutorial-build from plugins.sbt,scaffold.sbt ...
      [info] loading project definition from /home/.../play-samples/play-scala-hello-world-tutorial/project
      [warn] There may be incompatibilities among your library dependencies; run 'evicted' to see detailed eviction warnings.
      [info] loading settings for project root from build.sbt ...
      [info] set current project to play-scala-hello-world-tutorial (in build file:/home/.../play-samples/play-scala-hello-world-tutorial/)
  
  --- (Running the application, auto-reloading is enabled) ---
  
  [info] p.c.s.AkkaHttpServer - Listening for HTTP on /[0:0:0:0:0:0:0:0]:9000
  
  (Server started, use Enter to stop and go back to the console...)
  </code></pre>
  <p>curl localhost:9000</p>
  <p>results in this:</p>
  <pre><code>play.api.UnexpectedException: Unexpected exception[UncheckedExecutionException: java.lang.IllegalStateException: Unable to load cache item]
      at play.core.server.DevServerStart$$anon$1.reload(DevServerStart.scala:254)
      at play.core.server.DevServerStart$$anon$1.get(DevServerStart.scala:148)
      at play.core.server.AkkaHttpServer.handleRequest(AkkaHttpServer.scala:302)
      at play.core.server.AkkaHttpServer.$anonfun$createServerBinding$1(AkkaHttpServer.scala:224)
      at akka.stream.impl.fusing.MapAsync$$anon$30.onPush(Ops.scala:1297)
      at akka.stream.impl.fusing.GraphInterpreter.processPush(GraphInterpreter.scala:541)
      at akka.stream.impl.fusing.GraphInterpreter.processEvent(GraphInterpreter.scala:495)
      at akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:390)
      at akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:625)
      at akka.stream.impl.fusing.GraphInterpreterShell$AsyncInput.execute(ActorGraphInterpreter.scala:502)
  Caused by: com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalStateException: Unable to load cache item
      at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2051)
      at com.google.common.cache.LocalCache.get(LocalCache.java:3951)
      at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3974)
      at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4958)
      at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4964)
      at com.google.inject.internal.FailableCache.get(FailableCache.java:54)
      at com.google.inject.internal.ConstructorInjectorStore.get(ConstructorInjectorStore.java:49)
      at com.google.inject.internal.ConstructorBindingImpl.initialize(ConstructorBindingImpl.java:155)
      at com.google.inject.internal.InjectorImpl.initializeBinding(InjectorImpl.java:592)
      at com.google.inject.internal.AbstractBindingProcessor$Processor.initializeBinding(AbstractBindingProcessor.java:173)
  Caused by: java.lang.IllegalStateException: Unable to load cache item
      at com.google.inject.internal.cglib.core.internal.$LoadingCache.createEntry(LoadingCache.java:79)
      at com.google.inject.internal.cglib.core.internal.$LoadingCache.get(LoadingCache.java:34)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:119)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator.create(AbstractClassGenerator.java:294)
      at com.google.inject.internal.cglib.reflect.$FastClass$Generator.create(FastClass.java:65)
      at com.google.inject.internal.BytecodeGen.newFastClassForMember(BytecodeGen.java:258)
      at com.google.inject.internal.BytecodeGen.newFastClassForMember(BytecodeGen.java:207)
      at com.google.inject.internal.DefaultConstructionProxyFactory.create(DefaultConstructionProxyFactory.java:49)
      at com.google.inject.internal.ProxyFactory.create(ProxyFactory.java:156)
      at com.google.inject.internal.ConstructorInjectorStore.createConstructor(ConstructorInjectorStore.java:94)
  Caused by: java.lang.ExceptionInInitializerError: null
      at com.google.inject.internal.cglib.core.$DuplicatesPredicate.evaluate(DuplicatesPredicate.java:104)
      at com.google.inject.internal.cglib.core.$CollectionUtils.filter(CollectionUtils.java:52)
      at com.google.inject.internal.cglib.reflect.$FastClassEmitter.&lt;init&gt;(FastClassEmitter.java:69)
      at com.google.inject.internal.cglib.reflect.$FastClass$Generator.generateClass(FastClass.java:77)
      at com.google.inject.internal.cglib.core.$DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator.generate(AbstractClassGenerator.java:332)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:96)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:94)
      at com.google.inject.internal.cglib.core.internal.$LoadingCache$2.call(LoadingCache.java:54)
      at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
  Caused by: com.google.inject.internal.cglib.core.$CodeGenerationException: java.lang.reflect.InaccessibleObjectException--&gt;Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not &quot;opens java.lang&quot; to unnamed module @5f574e3d
      at com.google.inject.internal.cglib.core.$ReflectUtils.defineClass(ReflectUtils.java:464)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator.generate(AbstractClassGenerator.java:339)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:96)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:94)
      at com.google.inject.internal.cglib.core.internal.$LoadingCache$2.call(LoadingCache.java:54)
      at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
      at com.google.inject.internal.cglib.core.internal.$LoadingCache.createEntry(LoadingCache.java:61)
      at com.google.inject.internal.cglib.core.internal.$LoadingCache.get(LoadingCache.java:34)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:119)
      at com.google.inject.internal.cglib.core.$AbstractClassGenerator.create(AbstractClassGenerator.java:294)
  Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not &quot;opens java.lang&quot; to unnamed module @5f574e3d
      at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
      at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
      at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
      at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
      at com.google.inject.internal.cglib.core.$ReflectUtils$1.run(ReflectUtils.java:61)
      at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
      at com.google.inject.internal.cglib.core.$ReflectUtils.&lt;clinit&gt;(ReflectUtils.java:52)
      at com.google.inject.internal.cglib.reflect.$FastClassEmitter.&lt;init&gt;(FastClassEmitter.java:67)
      at com.google.inject.internal.cglib.reflect.$FastClass$Generator.generateClass(FastClass.java:77)
      at com.google.inject.internal.cglib.core.$DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
  
  
  &gt;java -version  
  openjdk version &quot;16&quot; 2021-03-16
  OpenJDK Runtime Environment AdoptOpenJDK (build 16+36)
  OpenJDK 64-Bit Server VM AdoptOpenJDK (build 16+36, mixed mode, sharing)
      
  &gt; sbt sbtVersion
  [info] welcome to sbt 1.3.13 (AdoptOpenJDK Java 16)
  [info] loading global plugins from /home/../.sbt/1.0/plugins
  [info] loading settings for project play-scala-hello-world-tutorial-build from scaffold.sbt,plugins.sbt ...
  [info] loading project definition from /home/.../play-samples/play-scala-hello-world-tutorial/project
  [warn] There may be incompatibilities among your library dependencies; run 'evicted' to see detailed eviction warnings.
  [info] loading settings for project root from build.sbt ...
  [info] set current project to play-scala-hello-world-tutorial (in build file:/home/.../play-samples/play-scala-hello-world-tutorial/)
  [info] 1.3.13
  </code></pre>
  <p>project/build.properties:</p>
  <pre><code># sbt.version=1.3.13
  sbt.version=1.4.3
  </code></pre>