Log4J2: Reflection.getCallerClass is not supported with Java 11

Used Log4J2 for the first time and while running my application out of IDEA I'm getting the following error below. Having a Maven Projekt, running on Liberika JDK 11. As I understand, it has to do with compatibilities between JDK 11 and Log4J2 - but I have no clue how to get rid of this error. Any help is much apprechiated - thank you!

2019-03-12 14:21:14,272 main INFO sun.reflect.Reflection.getCallerClass is not supported. ReflectionUtil.getCallerClass will be much slower due to this. java.lang.ClassNotFoundException: sun.reflect.Reflection
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:315)
at org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:141)
at org.apache.logging.log4j.util.ReflectionUtil.<clinit>(ReflectionUtil.java:65)
at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:136)
at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:121)
at org.apache.logging.log4j.core.impl.MutableLogEvent.getThrownProxy(MutableLogEvent.java:329)
at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:61)
at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:38)
at org.apache.logging.log4j.core.layout.PatternLayout$PatternSerializer.toSerializable(PatternLayout.java:294)
at org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:195)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:180)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:57)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:176)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:169)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:160)
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:447)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:432)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:416)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:402)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2091)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:1988)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1960)
at org.apache.logging.log4j.spi.AbstractLogger.error(AbstractLogger.java:733)
at ch.removonarx.chargingstations.data.importer.csv.CSVChargingStationImporter.parse(CSVChargingStationImporter.java:33)
at ch.removonarx.chargingstations.data.importer.csv.TestCSVChargingStationImporter.testChargingStationImport(TestCSVChargingStationImporter.java:27)
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.apache.maven.surefire.junit.PojoTestSet.executeTestMethod(PojoTestSet.java:151)
at org.apache.maven.surefire.junit.PojoTestSet.executeTestMethods(PojoTestSet.java:102)
at org.apache.maven.surefire.junit.PojoTestSet.execute(PojoTestSet.java:83)
at org.apache.maven.surefire.junit.JUnit3Provider.executeTestSet(JUnit3Provider.java:121)
at org.apache.maven.surefire.junit.JUnit3Provider.invoke(JUnit3Provider.java:98)
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.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)