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java.lang.IllegalStateException: Unable to create a manager	at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:73)	at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:60)	at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.getFileManager(RollingFileManager.java:79)	at org.apache.logging.log4j.core.appender.RollingFileAppender.createAppender(RollingFileAppender.java:184)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:137)	at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:766)	at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:706)	at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:698)	at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:358)	at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:161)	at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:361)	at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:426)	at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:442)	at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:138)	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:147)	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:41)	at org.apache.logging.log4j.LogManager.getContext(LogManager.java:175)	at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:102)	at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:43)	at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:42)	at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:285)	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:305)	at com.amazon.alexa.avs.AVSApp.(AVSApp.java:58)