19:22:57,672 WARN  [RequestNotificationCommand] (mgcp-3) Unexpected error occurred during tx=147526652 execution. Reason:
org.squirrelframework.foundation.exception.TransitionException: 00010017 : Transition from 'null' to 'DELAY_BEFORE_COLLECT' on 'null' with context 'org.restcomm.media.control.mgcp.pkg.au.asr.AsrContext@65f86c57' when invoking action 'enterWaitingBeforeCollecting' caused exception '00010012 : couldn't invoke 'public void org.restcomm.media.control.mgcp.pkg.au.asr.AsrFsmImpl.enterWaitingBeforeCollecting(org.restcomm.media.control.mgcp.pkg.au.asr.AsrState,org.restcomm.media.control.mgcp.pkg.au.asr.AsrState,org.restcomm.media.control.mgcp.pkg.au.asr.AsrEvent,org.restcomm.media.control.mgcp.pkg.au.asr.AsrContext)' with [null, DELAY_BEFORE_COLLECT, null, org.restcomm.media.control.mgcp.pkg.au.asr.AsrContext@65f86c57] on org.restcomm.media.control.mgcp.pkg.au.asr.AsrFsmImpl@67aa1c26: null.'.
    at org.squirrelframework.foundation.fsm.impl.AbstractExecutionService.doExecute(AbstractExecutionService.java:88) ~[squirrel-foundation-0.3.9.11.jar:0.3.9.11]
    at org.squirrelframework.foundation.fsm.impl.AbstractExecutionService.executeActions(AbstractExecutionService.java:132) ~[squirrel-foundation-0.3.9.11.jar:0.3.9.11]
    at org.squirrelframework.foundation.fsm.impl.AbstractExecutionService.execute(AbstractExecutionService.java:140) ~[squirrel-foundation-0.3.9.11.jar:0.3.9.11]
    at org.squirrelframework.foundation.fsm.impl.AbstractStateMachine.internalStart(AbstractStateMachine.java:552) ~[squirrel-foundation-0.3.9.11.jar:0.3.9.11]
    at org.squirrelframework.foundation.fsm.impl.AbstractStateMachine.start(AbstractStateMachine.java:539) ~[squirrel-foundation-0.3.9.11.jar:0.3.9.11]
    at org.restcomm.media.control.mgcp.pkg.au.asr.AsrSignal.execute(AsrSignal.java:74) ~[mgcp-8.0.0-SNAPSHOT.jar:8.0.0-SNAPSHOT]
    at org.restcomm.media.control.mgcp.endpoint.GenericMgcpEndpoint.requestNotification(GenericMgcpEndpoint.java:421) ~[mgcp-8.0.0-SNAPSHOT.jar:8.0.0-SNAPSHOT]
    at org.restcomm.media.control.mgcp.command.RequestNotificationCommand.executeCommand(RequestNotificationCommand.java:161) ~[mgcp-8.0.0-SNAPSHOT.jar:8.0.0-SNAPSHOT]
    at org.restcomm.media.control.mgcp.command.RequestNotificationCommand.call(RequestNotificationCommand.java:178) [mgcp-8.0.0-SNAPSHOT.jar:8.0.0-SNAPSHOT]
    at org.restcomm.media.control.mgcp.command.RequestNotificationCommand.call(RequestNotificationCommand.java:57) [mgcp-8.0.0-SNAPSHOT.jar:8.0.0-SNAPSHOT]
    at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:108) [guava-19.0.jar:?]
    at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:41) [guava-19.0.jar:?]
    at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:77) [guava-19.0.jar:?]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_212]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_212]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_212]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:1.8.0_212]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_212]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_212]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]