Yeah there was a port missing after the update.
“electrs_electrs_1 | Error: Failed to resolve address 10.21.21.7:: invalid port value”
So in waiting for a patch i hard coded “docker-compose.yml” in Electrs (you can modify it in Files)
in my case i use Knots so i put (line 33 to 35) :
ELECTRS_DAEMON_RPC_ADDR: ${APP_BITCOIN_NODE_IP}:${APP_BITCOIN_RPC_PORT}
ELECTRS_DAEMON_P2P_ADDR: ${APP_BITCOIN_NODE_IP}:${APP_BITCOIN_P2P_WHITEBIND_PORT}
ELECTRS_ELECTRUM_RPC_ADDR: 0.0.0.0:${APP_ELECTRS_NODE_PORT}
To
ELECTRS_DAEMON_RPC_ADDR: ${APP_BITCOIN_NODE_IP}:9332
ELECTRS_DAEMON_P2P_ADDR: ${APP_BITCOIN_NODE_IP}:9333
ELECTRS_ELECTRUM_RPC_ADDR: 0.0.0.0:50001
i guess for Bitcoin core it’s
ELECTRS_DAEMON_RPC_ADDR: ${APP_BITCOIN_NODE_IP}:8332
ELECTRS_DAEMON_P2P_ADDR: ${APP_BITCOIN_NODE_IP}:8333
ELECTRS_ELECTRUM_RPC_ADDR: 0.0.0.0:50001
and after that you need to restart Electrs