wuhewei opened a new issue, #10139: URL: https://github.com/apache/skywalking/issues/10139
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/skywalking/issues?q=is%3Aissue) and found no similar issues. ### Apache SkyWalking Component UI (apache/skywalking-booster-ui) ### What happened **Access the ip:8080 and get the following error:** 2022-12-09 02:17:00,652 io.netty.handler.codec.compression.Brotli 48 [armeria-common-worker-epoll-2-4] DEBUG [] - Failed to load brotli4j; Brotli support will be unavailable. java.lang.NullPointerException: null at java.util.Objects.requireNonNull(Unknown Source) ~[?:?] at java.nio.file.Files.copy(Unknown Source) ~[?:?] at com.aayushatharva.brotli4j.Brotli4jLoader.<clinit>(Brotli4jLoader.java:50) ~[skywalking-webapp.jar:?] at io.netty.handler.codec.compression.Brotli.<clinit>(Brotli.java:46) [skywalking-webapp.jar:?] at com.linecorp.armeria.server.file.FileService$ContentEncoding.<clinit>(FileService.java:527) [skywalking-webapp.jar:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] at java.lang.Class.getEnumConstantsShared(Unknown Source) [?:?] at java.lang.System$2.getEnumConstantsShared(Unknown Source) [?:?] at java.util.EnumSet.getUniverse(Unknown Source) [?:?] at java.util.EnumSet.noneOf(Unknown Source) [?:?] at com.linecorp.armeria.server.file.FileService.findFile(FileService.java:200) [skywalking-webapp.jar:?] at com.linecorp.armeria.server.file.FileService.access$100(FileService.java:71) [skywalking-webapp.jar:?] at com.linecorp.armeria.server.file.FileService$OrElseHttpService.serve(FileService.java:489) [skywalking-webapp.jar:?] at com.linecorp.armeria.server.HttpServerHandler.handleRequest(HttpServerHandler.java:357) [skywalking-webapp.jar:?] at com.linecorp.armeria.server.HttpServerHandler.channelRead(HttpServerHandler.java:250) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [skywalking-webapp.jar:?] at com.linecorp.armeria.server.Http1RequestDecoder.channelRead(Http1RequestDecoder.java:227) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [skywalking-webapp.jar:?] at com.linecorp.armeria.server.HttpServerUpgradeHandler.channelRead(HttpServerUpgradeHandler.java:228) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [skywalking-webapp.jar:?] at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) [skywalking-webapp.jar:?] at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:336) [skywalking-webapp.jar:?] at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:308) [skywalking-webapp.jar:?] at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [skywalking-webapp.jar:?] at io.netty.handler.codec.ByteToMessageDecoder.handlerRemoved(ByteToMessageDecoder.java:256) [skywalking-webapp.jar:?] at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:526) [skywalking-webapp.jar:?] at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:458) [skywalking-webapp.jar:?] at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:280) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [skywalking-webapp.jar:?] at io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:280) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [skywalking-webapp.jar:?] at io.netty.handler.flush.FlushConsolidationHandler.channelRead(FlushConsolidationHandler.java:152) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [skywalking-webapp.jar:?] at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [skywalking-webapp.jar:?] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [skywalking-webapp.jar:?] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [skywalking-webapp.jar:?] at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:800) [skywalking-webapp.jar:?] at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:499) [skywalking-webapp.jar:?] at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397) [skywalking-webapp.jar:?] at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [skywalking-webapp.jar:?] at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [skywalking-webapp.jar:?] at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [skywalking-webapp.jar:?] at java.lang.Thread.run(Unknown Source) [?:?] ### What you expected to happen It is preliminarily checked that there is an error in netty. ### How to reproduce **platform:** Linux version 5.4.0-125-generic (buildd@lcy02-amd64-083) (gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1)) _141-Ubuntu SMP Wed Aug 10 13:42:03 UTC 2022 **docker-compose:** apache/skywalking-ui:9.3.0 ### Anything else _No response_ ### Are you willing to submit PR? - [ ] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. 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