Docker splinter example scabbard events error

[TanjinAlam]

Re-creating the error

docker-compose -f examples/splinter/docker-compose.yaml up

my both nodes are running Splinter 0.6
proposing a node from alpha

splinter circuit propose
--key /registry/alpha.priv
--url http://splinterd-alpha:8085
--management grid
--auth-type trust
--node alpha-node-000::tcps://splinterd-alpha:8044
--node beta-node-000::tcps://splinterd-beta:8044
--service gsAA::alpha-node-000
--service gsBB::beta-node-000
--service-type *::scabbard
--service-arg *::admin_keys=$(cat gridd.pub)
--service-peer-group gsAA,gsBB

export CIRCUIT_ID=your circuit id

accepting node from beta

splinter circuit vote
--key /registry/beta.priv
--url http://splinterd-beta:8085
$CIRCUIT_ID
--accept

ERROR LOG

splinterd-alpha | [2022-10-30 16:51:27.908] T[actix-rt:worker:1] DEBUG [splinter::rest_api::actix_web_1::websocket] Received a message: StateChangeEvent { id: "df75d944e6c87edbfa6f8a74fab4d660e141490c3a012ab92fc344404b36eadb3846974fd55c235a38245acdd3ee994fadda560396d072c5c158117e98f92a71", state_changes: [Set(key: 00ec02eaa18d3258644c60c20d7841e5679a8899af4fed679adc2aa9364509913f2d97, payload_size: 3072151), Set(key: 00ec01384eea315aae511b79d12dc7791232dcb3d15aeef395ea193dd9caaccfd6023b, payload_size: 291)] }
splinterd-beta | [2022-10-30 16:51:27.935] T[actix-rt:worker:1] DEBUG [splinter::rest_api::actix_web_1::websocket] Starting Event Websocket
gridd-alpha | ERROR [gridd::splinter::event] An error occurred while listening for scabbard events Cannot connect to ws server
gridd-alpha | DEBUG [gridd::splinter::event] Attempting to restart connection
gridd-alpha | DEBUG [splinter::events::ws] starting: http://splinterd-alpha:8085/scabbard/iFaha-yXn8t/gsAA/ws/subscribe
gridd-alpha | INFO [splinter::events::reactor] A ws connection closed

operating system macOs Big Sur , ubuntu 22 LTS