java.lang.ClassNotFoundException: org.netbeans.modules.html.editor.spi.embedding.JsEmbeddingProviderPlugin at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) Caused: java.lang.ClassNotFoundException: org.netbeans.modules.html.editor.spi.embedding.JsEmbeddingProviderPlugin starting from ModuleCL@69839984[org.netbeans.modules.javascript2.react] with possible defining loaders [ModuleCL@c6a480e[org.netbeans.modules.html.editor]] and declared parents [ModuleCL@acba0ad[org.netbeans.modules.parsing.api], ModuleCL@65a1433f[org.netbeans.modules.javascript2.lexer], ModuleCL@c29be53[org.netbeans.modules.editor.mimelookup], ModuleCL@c6a480e[org.netbeans.modules.html.editor], ModuleCL@11884b9b[org.netbeans.modules.lexer], ModuleCL@5279e467[org.netbeans.modules.csl.api], ModuleCL@551125a5[org.netbeans.modules.html.lexer], ModuleCL@711e4942[org.netbeans.modules.csl.types], ModuleCL@77d56d67[org.netbeans.modules.html.editor.lib]] at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/html/editor/spi/embedding/JsEmbeddingProviderPlugin at java.lang.ClassLoader.defineClass1(ClassLoader.java:0) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:311) Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/html/editor/spi/embedding/JsEmbeddingProviderPlugin while loading org.netbeans.modules.javascript2.react.ReactEmbeddingProviderPlugin; see http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:263) at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:187) at org.netbeans.ModuleManager$SystemClassLoader.loadClass(ModuleManager.java:772) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Class.java:0) at java.lang.Class.forName(Class.java:348) at org.netbeans.modules.editor.mimelookup.impl.FolderPathLookup$InstanceItem.findTypeFor(FolderPathLookup.java:427) at org.netbeans.modules.editor.mimelookup.impl.FolderPathLookup$InstanceItem.createInstanceFor(FolderPathLookup.java:409) at org.netbeans.modules.editor.mimelookup.impl.FolderPathLookup$InstanceItem.getInstance(FolderPathLookup.java:349) at org.netbeans.modules.editor.mimelookup.impl.FolderPathLookup$PairItem.getInstance(FolderPathLookup.java:204) at org.openide.util.lookup.AbstractLookup$R.allInstances(AbstractLookup.java:1055) at org.openide.util.lookup.AbstractLookup$R.allInstances(AbstractLookup.java:1035) at org.openide.util.lookup.ProxyLookup$LazyCollection.computeSingleResult(ProxyLookup.java:1285) at org.openide.util.lookup.ProxyLookup$LazyCollection.computeDelegate(ProxyLookup.java:1123) at org.openide.util.lookup.ProxyLookup$LazyCollection.access$900(ProxyLookup.java:1051) at org.openide.util.lookup.ProxyLookup$LazyCollection$1.hasNext(ProxyLookup.java:1251) at org.netbeans.modules.html.editor.embedding.JsEPPluginQuery$Session.startProcessing(JsEPPluginQuery.java:106) at org.netbeans.modules.html.editor.embedding.JsEmbeddingProvider.process(JsEmbeddingProvider.java:173) at org.netbeans.modules.html.editor.embedding.JsEmbeddingProvider.access$100(JsEmbeddingProvider.java:80) at org.netbeans.modules.html.editor.embedding.JsEmbeddingProvider$1.run(JsEmbeddingProvider.java:133) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) at org.netbeans.modules.html.editor.embedding.JsEmbeddingProvider.getEmbeddings(JsEmbeddingProvider.java:126) at org.netbeans.modules.parsing.impl.TaskProcessor.callEmbeddingProvider(TaskProcessor.java:599) at org.netbeans.modules.parsing.impl.SourceCache.getAllEmbeddings(SourceCache.java:322) at org.netbeans.modules.parsing.api.ResultIterator.getEmbeddings(ResultIterator.java:163) at org.netbeans.modules.csl.editor.overridden.ComputeAnnotations$1.run(ComputeAnnotations.java:187) at org.netbeans.modules.csl.editor.overridden.ComputeAnnotations$1.run(ComputeAnnotations.java:191) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) at org.netbeans.modules.csl.editor.overridden.ComputeAnnotations.run(ComputeAnnotations.java:121) at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584) at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:809) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304) at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725) at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)