Regarding IPv6 BGP peer not getting established

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I am using os version is 1.3.3. I have configured the IPv6 BGP peer but does not goes up. I am sharing log and version detail in below. There is no issue with ipv4 bgp peer.

Version: VyOS 1.3.3
Release train: equuleus
Built by: Sentrium S.L.
Built on: Mon 29 May 2023 12:55 UTC
Architecture: x86_64
Boot via: installed image
System type: bare metal

Hardware vendor: HP
Hardware model: ProLiant DL360 G5

configuration:
set protocols bgp XXXX neighbor 2a01:cfc4:0:5c00::8 address-family ipv6-unicast
set protocols bgp XXXX neighbor 2a01:cfc4:0:5c00::8 remote-as ‘XXXX’
set protocols bgp XXXX neighbor 2a01:cfc4:0:5c00::8 update-source ‘2a01:cfc4:0:5c00::9’
set protocols bgp XXXX parameters no-client-to-client-reflection
set protocols bgp XXXX parameters router-id ‘XXXX’

Log:

Feb 19 02:01:52 bgpd[1046]: bgp_update_receive: rcvd End-of-RIB for IPv6 Unicast from 2a01:cfc4:0:5c00::8 in vrf default
Feb 19 02:01:54 bgpd[1046]: [EC 33554465] 2a01:cfc4:0:5c00::8 [FSM] Unexpected event TCP_fatal_error in state Active, prior events TCP_connection_closed, TCP_connection_closed, fd -1
Feb 19 02:32:22 bgpd[1046]: bgp_update_receive: rcvd End-of-RIB for IPv6 Unicast from 2a01:cfc4:0:5c00::8 in vrf default
Feb 19 02:32:24 bgpd[1046]: [EC 33554454] 2a01:cfc4:0:5c00::8 [Error] bgp_read_packet error: Connection reset by peer
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