No video / audio with 3 or more participants, jvb can't load settings

Hi,
When you connect a third client the video and audio are lost

Alt linux server 9 is installed
Nginx, prosody, and jitsi are downloaded from the official repository
All ports are available
Set up according to the article https://www.altlinux.org/Jitsi_Meet

log /var/log/jitsi/jvb.log
jvb.log [----] 119 L:[ 1+41 42/ 43] (6307/6308b) 0010 0x00A []
2020-07-20 12:47:45.585 INFO: [1] NewConfig$1.invoke#88: Loaded NewConfig with origin: merge of system properties,/etc/jitsi/videobridge/application.conf: 1,s
2020-07-20 12:47:45.593 INFO: [1] LegacyConfigFileLoader$Companion.load#40: Attempting to load legacy config file at path /etc/jitsi, videobridge, sip-communi
2020-07-20 12:47:45.602 INFO: [1] LegacyConfigFileLoader$Companion.load#40: Attempting to load legacy config file at path /etc/jitsi, videobridge, sip-communi
2020-07-20 12:47:45.604 INFO: [1] JitsiConfig$Companion.reload#40: Reloading.
2020-07-20 12:47:45.621 INFO: [1] NewConfig$1.invoke#88: Loaded NewConfig with origin: merge of system properties,/etc/jitsi/videobridge/application.conf: 1,s
2020-07-20 12:47:45.621 INFO: [1] LegacyConfigFileLoader$Companion.load#40: Attempting to load legacy config file at path /etc/jitsi, videobridge, sip-communi
2020-07-20 12:47:45.622 INFO: [1] LegacyConfigFileLoader$Companion.load#40: Attempting to load legacy config file at path /etc/jitsi, videobridge, sip-communi
2020-07-20 12:47:45.658 INFO: [11] ConfigurationActivator.start#45: Registered the LegacyConfigurationServiceShim in OSGi.
2020-07-20 12:47:45.662 INFO: [11] AbstractVersionActivator.start#91: VersionService registered: JVB 2.1.SNAPSHOT
2020-07-20 12:47:45.675 INFO: [11] AbstractJettyBundleActivator.start#613: Not starting the Jetty service for org.jitsi.videobridge.rest.RESTBundleActivator(p
2020-07-20 12:47:45.682 INFO: [11] AbstractJettyBundleActivator.start#613: Not starting the Jetty service for org.jitsi.videobridge.rest.PublicRESTBundleActiv
2020-07-20 12:47:45.684 INFO: [11] AbstractJettyBundleActivator.start#613: Not starting the Jetty service for org.jitsi.videobridge.rest.PublicClearPortRedire
2020-07-20 12:47:45.763 INFO: [11] UlimitCheck.printUlimits#115: Running with open files limit 65000 (hard 65000), thread limit 65000 (hard 65000).
2020-07-20 12:47:45.766 INFO: [11] VideobridgeExpireThread.start#92: Starting with 60 second interval.
2020-07-20 12:47:45.772 WARNING: [11] Videobridge.start#918: No authorized source regexp configured. Will accept requests from any source.
2020-07-20 12:47:45.844 INFO: [17] Videobridge.createConference#326: create_conf, id=7b3df38d1d92efec gid=null logging=false
2020-07-20 12:47:45.870 INFO: [17] TaskPools.#81: TaskPools detected 2 processors, creating the CPU pool with that many threads
2020-07-20 12:47:46.050 INFO: [11] JitsiConfig$Companion.reload#40: Reloading.
2020-07-20 12:47:46.071 INFO: [11] NewConfig$1.invoke#88: Loaded NewConfig with origin: merge of system properties,/etc/jitsi/videobridge/application.conf: 1,
2020-07-20 12:47:46.072 INFO: [11] LegacyConfigFileLoader$Companion.load#40: Attempting to load legacy config file at path /etc/jitsi, videobridge, sip-commun
2020-07-20 12:47:46.077 INFO: [11] LegacyConfigFileLoader$Companion.load#40: Attempting to load legacy config file at path /etc/jitsi, videobridge, sip-commun
2020-07-20 12:47:46.095 INFO: [18] org.ice4j.ice.harvest.MappingCandidateHarvesters.initialize: Using org.ice4j.ice.harvest.MappingCandidateHarvester, face=/1
2020-07-20 12:47:46.097 INFO: [18] org.ice4j.ice.harvest.MappingCandidateHarvesters.initialize: Initialized mapping harvesters (delay=10ms). stunDiscoveryFai
2020-07-20 12:47:46.140 INFO: [11] OctoRelayService.start#62: Octo relay is disabled.
2020-07-20 12:47:46.234 INFO: [17] org.ice4j.ice.harvest.AbstractUdpListener.: Initialized AbstractUdpListener with address 83.220.173.141:10000/udp. Re
2020-07-20 12:47:46.235 INFO: [17] org.ice4j.ice.harvest.SinglePortUdpHarvester.: Initialized SinglePortUdpHarvester with address 83.220.173.141:10000/u
2020-07-20 12:47:46.271 INFO: [20] [hostname=localhost id=shard] MucClient$1.connected#266: Connected.
2020-07-20 12:47:46.271 INFO: [20] [hostname=localhost id=shard] MucClient.lambda$getConnectAndLoginCallable$7#648: Logging in.
2020-07-20 12:47:46.789 INFO: [20] [hostname=localhost id=shard] MucClient$MucWrapper.join#751: Joined MUC: jvbbrewery@internal.auth.sanyakop98.ru
SCTP JNI load: Linux OS detected
SCTP lib loaded
=====>: org_jitsi_modified_sctp4j_SctpJni.c calling init
=====>: org_jitsi_modified_sctp4j_SctpJni.c about to set SCTP_DEBUG_ALL
2020-07-20 12:47:47.704 INFO: [17] Health.doRun#294: Performed a successful health check in 1932ms. Sticky failure: false
2020-07-20 12:47:57.707 INFO: [17] Videobridge.createConference#326: create_conf, id=941f151db975cf26 gid=null logging=false
2020-07-20 12:47:57.748 INFO: [17] Health.doRun#294: Performed a successful health check in 43ms. Sticky failure: false
2020-07-20 12:48:07.751 INFO: [17] Videobridge.createConference#326: create_conf, id=8ff9b0c68e232da3 gid=null logging=false
2020-07-20 12:48:07.768 INFO: [17] Health.doRun#294: Performed a successful health check in 19ms. Sticky failure: false
2020-07-20 12:48:17.769 INFO: [17] Videobridge.createConference#326: create_conf, id=db0f3225273c2ad7 gid=null logging=false
2020-07-20 12:48:17.789 INFO: [17] Health.doRun#294: Performed a successful health check in 21ms. Sticky failure: false
2020-07-20 12:48:27.792 INFO: [17] Videobridge.createConference#326: create_conf, id=c3aba5e5cf2b2618 gid=null logging=false
2020-07-20 12:48:27.817 INFO: [17] Health.doRun#294: Performed a successful health check in 27ms. Sticky failure: false

Thanks