15:18:00.918 [main] INFO  o.o.m.d.broker.DOMNotificationRouter - DOM Notification Router started
15:18:00.918 [main] INFO  o.o.mdsal.dom.broker.DOMRpcRouter - DOM RPC/Action router started
15:18:00.918 [main] INFO  o.o.m.d.broker.DOMNotificationRouter - DOM Notification Router started
15:18:00.920 [main] INFO  o.o.r.s.RestconfTransportChannelListener - Initialized with service class org.opendaylight.restconf.server.mdsal.MdsalRestconfServer
15:18:00.921 [main] INFO  o.o.r.s.RestconfTransportChannelListener - Initialized with base path: /restconf, default encoding: JSON, default pretty print: false
15:18:00.922 [restconf-netty-subscription-1] INFO  o.o.n.t.http.ClientHttp1SseService - Client SSE enabled on channel [id: 0x0df5b162, L:/127.0.0.1:35052 - R:/127.0.0.1:43947]
15:18:01.128 [restconf-netty-subscription-3] INFO  o.o.n.t.http.ClientHttp1SseService - Client SSE enabled on channel [id: 0xdb53403f, L:/127.0.0.1:35068 - R:/127.0.0.1:43947]
15:18:01.333 [restconf-netty-subscription-5] INFO  o.o.n.t.http.ClientHttp1SseService - Client SSE enabled on channel [id: 0x671a056b, L:/127.0.0.1:35070 - R:/127.0.0.1:43947]
15:18:01.537 [restconf-netty-subscription-7] INFO  o.o.n.t.http.ClientHttp1SseService - Client SSE enabled on channel [id: 0xd5ed64e1, L:/127.0.0.1:35082 - R:/127.0.0.1:43947]
15:18:01.852 [main] INFO  o.o.mdsal.dom.broker.DOMRpcRouter - DOM RPC/Action router stopped
15:18:01.852 [main] INFO  o.o.m.d.broker.DOMNotificationRouter - DOM Notification Router stopped
15:18:01.852 [restconf-netty-subscription-2] WARN  i.n.channel.DefaultChannelPipeline - An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
java.lang.NullPointerException: Cannot invoke "org.opendaylight.mdsal.dom.api.DOMTransactionChain.newWriteOnlyTransaction()" because "this.txChain" is null
	at org.opendaylight.restconf.server.mdsal.MdsalRestconfStreamRegistry.removeSubscription(MdsalRestconfStreamRegistry.java:390)
	at org.opendaylight.restconf.server.spi.AbstractRestconfStreamRegistry$DynSubscription.deleteSubscription(AbstractRestconfStreamRegistry.java:263)
	at org.opendaylight.restconf.server.spi.AbstractRestconfStreamRegistry$DynSubscription.channelClosed(AbstractRestconfStreamRegistry.java:251)
	at org.opendaylight.restconf.server.spi.AbstractRestconfStreamRegistry$DynSubscription.controlSessionClosed(AbstractRestconfStreamRegistry.java:287)
	at org.opendaylight.restconf.server.spi.AbstractRestconfStreamRegistry$DynSubscriptionResource.removeRegistration(AbstractRestconfStreamRegistry.java:353)
	at org.opendaylight.yangtools.concepts.AbstractRegistration.close(AbstractRegistration.java:65)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at org.opendaylight.restconf.server.spi.DefaultTransportSession.removeRegistration(DefaultTransportSession.java:141)
	at org.opendaylight.yangtools.concepts.AbstractRegistration.close(AbstractRegistration.java:65)
	at org.opendaylight.restconf.server.RestconfSession.channelInactive(RestconfSession.java:63)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:251)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81)
	at io.netty.handler.codec.MessageAggregator.channelInactive(MessageAggregator.java:441)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:251)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81)
	at io.netty.handler.codec.MessageAggregator.channelInactive(MessageAggregator.java:441)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:251)
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelInactive(CombinedChannelDuplexHandler.java:416)
	at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:412)
	at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:377)
	at io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:219)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:251)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1424)
	at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:876)
	at io.netty.channel.AbstractChannel$AbstractUnsafe$8.run(AbstractChannel.java:684)
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:148)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:141)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:507)
	at io.netty.channel.SingleThreadIoEventLoop.run(SingleThreadIoEventLoop.java:182)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:1073)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.base/java.lang.Thread.run(Thread.java:1583)