Plugin crash on startup when running in JRE 11

[ofry]

IntelliJ IDEA 2019.1.1 (Ultimate Edition)
Build #IU-191.6707.61, built on April 16, 2019

JRE: 11.0.2+9-Ubuntu-3ubuntu118.10.3 amd64
JVM: OpenJDK 64-Bit Server VM by Oracle Corporation
Kubuntu 18.10 x64

File completion plugin v1.04

java.lang.NoClassDefFoundError: sun/reflect/Reflection
	at net.sf.jremoterun.utilities.JrrClassUtils.getCurrentClassImpl(JrrClassUtils.java:509)
	at net.sf.jremoterun.utilities.JrrClassUtils.getCurrentClass(JrrClassUtils.java:502)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
	at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:1845)
	at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:3773)
	at org.codehaus.groovy.runtime.callsite.ClassMetaClassGetPropertySite.getProperty(ClassMetaClassGetPropertySite.java:50)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
	at idea.plugins.thirdparty.filecompletion.share.MyGroovyCompletionContributor.<clinit>(MyGroovyCompletionContributor.groovy:15)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:398)
	at com.intellij.openapi.extensions.AbstractExtensionPointBean.findClass(AbstractExtensionPointBean.java:41)
	at com.intellij.util.ExtensionInstantiator.instantiateWithPicoContainerOnlyIfNeeded(ExtensionInstantiator.java:34)
	at com.intellij.openapi.extensions.CustomLoadingExtensionPointBean.instantiateExtension(CustomLoadingExtensionPointBean.java:21)
	at com.intellij.lang.LanguageExtensionPoint.lambda$new$0(LanguageExtensionPoint.java:22)
	at com.intellij.openapi.util.NotNullLazyValue$2.compute(NotNullLazyValue.java:68)
	at com.intellij.openapi.util.NotNullLazyValue.getValue(NotNullLazyValue.java:39)
	at com.intellij.lang.LanguageExtensionPoint.getInstance(LanguageExtensionPoint.java:27)
	at com.intellij.codeInsight.completion.CompletionPreloader.preload(CompletionPreloader.java:17)
	at com.intellij.openapi.application.Preloader.lambda$null$0(Preloader.java:66)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:164)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:586)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:532)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:86)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:151)
	at com.intellij.openapi.application.Preloader.lambda$initComponent$1(Preloader.java:63)
	at com.intellij.util.concurrency.BoundedTaskExecutor.doRun(BoundedTaskExecutor.java:220)
	at com.intellij.util.concurrency.BoundedTaskExecutor.access$100(BoundedTaskExecutor.java:26)
	at com.intellij.util.concurrency.BoundedTaskExecutor$2.lambda$run$0(BoundedTaskExecutor.java:198)
	at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:224)
	at com.intellij.util.concurrency.BoundedTaskExecutor$2.run(BoundedTaskExecutor.java:194)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)