Hyperledger Fabric! Error: failed to create deliver client for orderer

While creating channel faced following error:

Error: failed to create deliver client for orderer: orderer client failed to connect to orderer.openhut.in:7050: failed to create new connection: connection error: desc = "transport: error while dialing: dial tcp: lookup orderer.openhut.in on 127.0.0.11:53: no such host"

Solution:

$./byfn.sh down
$docker volume prune
$sudo systemctl daemon-reload
$sudo systemctl restart docker
$cd <path of download>/fabric-samples/first-network
$./byfn.sh generate
$./byfn.sh up