Network.Socket.connect: <socket: 71>: does not exist (Connection refused)

I’m in testnet preview. The realy node is working fine. I setted up the block producer, but i do not know why when i open the gLiveView i can see the relay node, but it stay in “cold peer”. If i check what the cardano-node is doing through journalctl --unit=cardano-node --follow i can see that there is written [2022-12-24 11:51:37.74 UTC] TracePromoteColdFailed 40 0 192.168.1.34:30001 159.38889812531s Network.Socket.connect: <socket: 71>: does not exist (Connection refused) and i can see that the number of socket it is changing always.
I’ve already read other post and i’ve added this line CARDANO_NODE_SOCKET_PATH=“$NODE_HOME/db/socket” into the .bashrc, but the problem still there. I was thinking to delete everything and restart from scratch, but i would prefer to understand what the problem is.
I’ve tryed also to telnet the port that should be used from the relay and block producer to communicate (30001) and everything it’ fine, so i assume that the problem is in the node itself or in some configuration fine.

dic 24 13:37:00 bserver cardano-node[517567]: [bserver:cardano.node.ConnectionManager:Info:80] [2022-12-24 12:37:00.54 UTC] TrConnectError (Just 192.168.1.56:30001) 192.168.1.34:30001 Network.Socket.connect: <socket: 38>: does not exist (Connection refused)
dic 24 13:37:00 bserver cardano-node[517567]: [bserver:cardano.node.PeerSelection:Info:54] [2022-12-24 12:37:00.54 UTC] TracePromoteColdFailed 50 0 192.168.1.34:30001 21.848689371241s Network.Socket.connect: <socket: 38>: does not exist (Connection refused)
dic 24 13:37:22 bserver cardano-node[517567]: [bserver:cardano.node.PeerSelection:Info:54] [2022-12-24 12:37:22.39 UTC] TracePromoteColdLocalPeers 1 0 (fromList [192.168.1.34:30001])
dic 24 13:37:22 bserver cardano-node[517567]: [bserver:cardano.node.ConnectionManager:Info:83] [2022-12-24 12:37:22.39 UTC] TrConnectError (Just 192.168.1.56:30001) 192.168.1.34:30001 Network.Socket.connect: <socket: 60>: does not exist (Connection refused)
dic 24 13:37:22 bserver cardano-node[517567]: [bserver:cardano.node.PeerSelection:Info:54] [2022-12-24 12:37:22.39 UTC] TracePromoteColdFailed 50 0 192.168.1.34:30001 40.99409726262s Network.Socket.connect: <socket: 60>: does not exist (Connection refused)
dic 24 13:38:03 bserver cardano-node[517567]: [bserver:cardano.node.PeerSelection:Info:54] [2022-12-24 12:38:03.39 UTC] TracePromoteColdLocalPeers 1 0 (fromList [192.168.1.34:30001])
dic 24 13:38:03 bserver cardano-node[517567]: [bserver:cardano.node.ConnectionManager:Info:92] [2022-12-24 12:38:03.39 UTC] TrConnectError (Just 192.168.1.56:30001) 192.168.1.34:30001 Network.Socket.connect: <socket: 39>: does not exist (Connection refused)
dic 24 13:38:03 bserver cardano-node[517567]: [bserver:cardano.node.PeerSelection:Info:54] [2022-12-24 12:38:03.39 UTC] TracePromoteColdFailed 50 0 192.168.1.34:30001 78.050655633329s Network.Socket.connect: <socket: 39>: does not exist (Connection refused)
dic 24 13:39:21 bserver cardano-node[517567]: [bserver:cardano.node.PeerSelection:Info:54] [2022-12-24 12:39:21.44 UTC] TracePromoteColdLocalPeers 1 0 (fromList [192.168.1.34:30001])
dic 24 13:39:21 bserver cardano-node[517567]: [bserver:cardano.node.ConnectionManager:Info:101] [2022-12-24 12:39:21.44 UTC] TrConnectError (Just 192.168.1.56:30001) 192.168.1.34:30001 Network.Socket.connect: <socket: 41>: does not exist (Connection refused)
dic 24 13:39:21 bserver cardano-node[517567]: [bserver:cardano.node.PeerSelection:Info:54] [2022-12-24 12:39:21.44 UTC] TracePromoteColdFailed 50 0 192.168.1.34:30001 158.761773733297s Network.Socket.connect: <socket: 41>: does not exist (Connection refused)

Schermata del 2022-12-24 14-30-17