Debug IntelliJ IDEA from IntelliJ IDEA

How can I debug IntelliJ IDEA from another instance of IDEA?

I already cloned the github but when I try to run a program from the self-built version of IDEA the following error is thrown:

Error:Internal error: (java.util.ServiceConfigurationError) org.jetbrains.jps.model.serialization.JpsModelSerializerExtension: Provider org.jetbrains.jps.intellilang.model.impl.JpsIntelliLangModelSerializerExtension not found
java.util.ServiceConfigurationError: org.jetbrains.jps.model.serialization.JpsModelSerializerExtension: Provider org.jetbrains.jps.intellilang.model.impl.JpsIntelliLangModelSerializerExtension not found
 at java.util.ServiceLoader.fail(ServiceLoader.java:239)
 at java.util.ServiceLoader.access$300(ServiceLoader.java:185)
 at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:372)
 at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
 at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
 at com.intellij.util.containers.ContainerUtilRt.copy(ContainerUtilRt.java:179)
 at com.intellij.util.containers.ContainerUtilRt.newArrayList(ContainerUtilRt.java:168)
 at org.jetbrains.jps.service.impl.JpsServiceManagerImpl$SingleClassLoaderPluginManager.loadExtensions(JpsServiceManagerImpl.java:96)
 at org.jetbrains.jps.service.impl.JpsServiceManagerImpl.loadExtensions(JpsServiceManagerImpl.java:88)
 at org.jetbrains.jps.service.impl.JpsServiceManagerImpl.getExtensions(JpsServiceManagerImpl.java:62)
 at org.jetbrains.jps.model.serialization.JpsModelSerializerExtension.getExtensions(JpsModelSerializerExtension.java:46)
 at org.jetbrains.jps.model.serialization.library.JpsSdkTableSerializer.getSdkPropertiesSerializer(JpsSdkTableSerializer.java:208)
 at org.jetbrains.jps.model.serialization.library.JpsSdkTableSerializer.loadSdk(JpsSdkTableSerializer.java:102)
 at org.jetbrains.jps.model.serialization.library.JpsSdkTableSerializer.loadSdks(JpsSdkTableSerializer.java:83)
 at org.jetbrains.jps.model.serialization.JpsGlobalLoader$SdkTableSerializer.loadExtension(JpsGlobalLoader.java:158)
 at org.jetbrains.jps.model.serialization.JpsGlobalLoader$SdkTableSerializer.loadExtension(JpsGlobalLoader.java:151)
 at org.jetbrains.jps.model.serialization.JpsLoaderBase.loadComponents(JpsLoaderBase.java:62)
 at org.jetbrains.jps.model.serialization.JpsGlobalLoader.loadGlobalComponents(JpsGlobalLoader.java:97)
 at org.jetbrains.jps.model.serialization.JpsGlobalLoader.load(JpsGlobalLoader.java:87)
 at org.jetbrains.jps.model.serialization.JpsGlobalLoader.loadGlobalSettings(JpsGlobalLoader.java:61)
 at org.jetbrains.jps.model.serialization.impl.JpsSerializationManagerImpl.loadModel(JpsSerializationManagerImpl.java:38)
 at org.jetbrains.jps.cmdline.JpsModelLoaderImpl.loadModel(JpsModelLoaderImpl.java:45)
 at org.jetbrains.jps.cmdline.BuildRunner.load(BuildRunner.java:79)
 at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:267)
 at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:125)
 at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:237)
 at org.jetbrains.jps.service.impl.SharedThreadPoolImpl.lambda$executeOnPooledThread$0(SharedThreadPoolImpl.java:42)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)

Any help is appreciated :)