Jitsi room Crash when another user joins

Hello , I am from China , Now WuHan virus is serious. We want to use jitsi-meet to reduce people gather. I also hope it can help students study at their home.

But when I use docker-jitsi-meet , ./docker-compose up , it come’s some error. When I jion the meeting, it works OK . But when second one join in , room crash , and show reconnecting.

I have read some comments in issues before, but I cann’t resolve it , please give me some help, thanks

My environment
OS:CentOS Linux release 7.6.1810 (Core)
Docker:Docker version 19.03.5, build 633a0ea
Server:vsphere VM 1CPU / 8GB Memory

My install setup
1、git clone https://github.com/jitsi/docker-jitsi-meet && cd docker-jitsi-meet
2、cp env.example .env
3、vi .env (modiy config)
4、./docker-compose up
I aslo use root or normal user run it. But the same error.

I am a new user , and cant’t upload logs . The main error log is below

jicofo_1_d0b2d814e78a | Jicofo 2020-02-10 06:54:51.182 SEVERE: [10] impl.configuration.ConfigurationActivator.log() Error creating c lib instance for fixing file permissions
jicofo_1_d0b2d814e78a | java.nio.file.FileSystemException: /config: Operation not permitted
jicofo_1_d0b2d814e78a | at sun.nio.fs.UnixException.translateToIOException(UnixException.java:91)
jicofo_1_d0b2d814e78a | at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
jicofo_1_d0b2d814e78a | at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
jicofo_1_d0b2d814e78a | at sun.nio.fs.UnixFileAttributeViews$Posix.setMode(UnixFileAttributeViews.java:238)
jicofo_1_d0b2d814e78a | at sun.nio.fs.UnixFileAttributeViews$Posix.setPermissions(UnixFileAttributeViews.java:260)
jicofo_1_d0b2d814e78a | at java.nio.file.Files.setPosixFilePermissions(Files.java:2045)
jicofo_1_d0b2d814e78a | at net.java.sip.communicator.impl.configuration.ConfigurationActivator.fixPermissions(ConfigurationActivator.java:167)
jicofo_1_d0b2d814e78a | at net.java.sip.communicator.impl.configuration.ConfigurationActivator.start(ConfigurationActivator.java:88)
jicofo_1_d0b2d814e78a | at org.jitsi.impl.osgi.framework.BundleImpl.start(BundleImpl.java:307)
jicofo_1_d0b2d814e78a | at org.jitsi.impl.osgi.framework.launch.FrameworkImpl.startLevelChanged(FrameworkImpl.java:472)
jicofo_1_d0b2d814e78a | at org.jitsi.impl.osgi.framework.startlevel.FrameworkStartLevelImpl$Command.run(FrameworkStartLevelImpl.java:137)
jicofo_1_d0b2d814e78a | at org.jitsi.impl.osgi.framework.AsyncExecutor.runInThread(AsyncExecutor.java:122)
jicofo_1_d0b2d814e78a | at org.jitsi.impl.osgi.framework.AsyncExecutor.access$000(AsyncExecutor.java:28)
jicofo_1_d0b2d814e78a | at org.jitsi.impl.osgi.framework.AsyncExecutor$1.run(AsyncExecutor.java:231)

JVB.log
jvb_1_8de8ac39c21a | JVB 2020-02-10 06:54:57.523 SEVERE: [20] util.UtilActivator.uncaughtException().122 An uncaught exception occurred in thread=Thread[Thread-8,5,main] and message was: null
jvb_1_8de8ac39c21a | java.lang.IllegalArgumentException
jvb_1_8de8ac39c21a | at java.util.concurrent.ThreadPoolExecutor.(ThreadPoolExecutor.java:1314)
jvb_1_8de8ac39c21a | at java.util.concurrent.ThreadPoolExecutor.(ThreadPoolExecutor.java:1202)
jvb_1_8de8ac39c21a | at java.util.concurrent.Executors.newFixedThreadPool(Executors.java:89)
jvb_1_8de8ac39c21a | at org.ice4j.ice.harvest.MappingCandidateHarvesters.createStunHarvesters(MappingCandidateHarvesters.java:327)
jvb_1_8de8ac39c21a | at org.ice4j.ice.harvest.MappingCandidateHarvesters.initialize(MappingCandidateHarvesters.java:171)
jvb_1_8de8ac39c21a | at java.lang.Thread.run(Thread.java:748)
jvb_1_8de8ac39c21a | JVB 2020-02-10 06:54:58.167 WARNING: [14] org.jitsi.videobridge.stats.MucStatsTransport.publishStatistics().69 Can not publish via presence, no ClientConnectionImpl.
jvb_1_8de8ac39c21a | JVB 2020-02-10 06:54:58.549 SEVERE: [18] org.jitsi.videobridge.health.Health.log() Health check failed in 4432ms:
jvb_1_8de8ac39c21a | java.lang.NullPointerException
jvb_1_8de8ac39c21a | at org.ice4j.ice.Agent.(Agent.java:407)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.IceUdpTransportManager.createIceAgent(IceUdpTransportManager.java:1070)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.IceUdpTransportManager.(IceUdpTransportManager.java:566)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.IceUdpTransportManager.(IceUdpTransportManager.java:527)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.Channel.createTransportManager(Channel.java:323)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.Channel.initialize(Channel.java:674)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.RtpChannel.initialize(RtpChannel.java:895)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.Content.createRtpChannel(Content.java:340)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.Content.createRtpChannel(Content.java:264)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.health.Health.check(Health.java:152)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.health.Health.doCheck(Health.java:244)
jvb_1_8de8ac39c21a | at org.jitsi.videobridge.health.Health.doRun(Health.java:495)
jvb_1_8de8ac39c21a | at org.jitsi.utils.concurrent.PeriodicRunnableWithObject.run(PeriodicRunnableWithObject.java:87)
jvb_1_8de8ac39c21a | at org.jitsi.utils.concurrent.RecurringRunnableExecutor.run(RecurringRunnableExecutor.java:216)
jvb_1_8de8ac39c21a | at org.jitsi.utils.concurrent.RecurringRunnableExecutor.runInThread(RecurringRunnableExecutor.java:292)
jvb_1_8de8ac39c21a | at org.jitsi.utils.concurrent.RecurringRunnableExecutor.access$000(RecurringRunnableExecutor.java:36)
jvb_1_8de8ac39c21a | at org.jitsi.utils.concurrent.RecurringRunnableExecutor$1.run(RecurringRunnableExecutor.java:328)