Hello, Would you please share some ideas on how to troubleshoot the error. I am running on MAC. Error connecting to node broker:29092 (id: -1 rack: null) (org.apache.kafka.clients.NetworkClient) java.net.UnknownHostException: broker: Name does not resolve

Error while executing topic command : Call(callName=createTopics, deadlineMs=1663338172286, tries=1, nextAllowedTryMs=1663338172387) timed out at 1663338172287 after 1 attempt(s)

[2022-09-16 142252,290] ERROR org.apache.kafka.common.errors.TimeoutException: Call(callName=createTopics, deadlineMs=1663338172286, tries=1, nextAllowedTryMs=1663338172387) timed out at 1663338172287 after 1 attempt(s) Caused by: org.apache.kafka.common.errors.TimeoutException: Timed out waiting for a node assignment. Call: createTopics (kafka.admin.TopicCommand$) WARNING: Due to limitations in metric names, topics with a period ('.') or underscore ('_') could collide. To avoid issues it is best to use either, but not both. [2022-09-16 142254,036] WARN [AdminClient clientId=adminclient-1] Connection to node -1 (broker/172.18.0.9:29092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient) [2022-09-16 142254,160] WARN [AdminClient clientId=adminclient-1] Connection to node -1 (broker/172.18.0.9:29092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient) [2022-09-16 142254,365] WARN [AdminClient clientId=adminclient-1] Connection to node -1 (broker/172.18.0.9:29092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient) [2022-09-16 142254,569] WARN [AdminClient clientId=adminclient-1] Connection to node -1 (broker/172.18.0.9:29092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient) [2022-09-16 142255,079] WARN [AdminClient clientId=adminclient-1] Connection to node -1 (broker/172.18.0.9:29092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient) [2022-09-16 142256,097] WARN [AdminClient clientId=adminclient-1] Connection to node -1 (broker/172.18.0.9:29092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient) [2022-09-16 142327,118] WARN [AdminClient clientId=adminclient-1] Error connecting to node broker:29092 (id: -1 rack: null) (org.apache.kafka.clients.NetworkClient) java.net.UnknownHostException: broker: Name does not resolve at java.base/java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929) at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1529) at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848) at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1519) at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1378) at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1306) at org.apache.kafka.clients.DefaultHostResolver.resolve(DefaultHostResolver.java:27) at org.apache.kafka.clients.ClientUtils.resolve(ClientUtils.java:111) at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.currentAddress(ClusterConnectionStates.java:513) at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.access$200(ClusterConnectionStates.java:467) at org.apache.kafka.clients.ClusterConnectionStates.currentAddress(ClusterConnectionStates.java:172) at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:985) at org.apache.kafka.clients.NetworkClient.ready(NetworkClient.java:311) at org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.sendEligibleCalls(KafkaAdminClient.java:1080) at org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.processRequests(KafkaAdminClient.java:1321) at org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.run(KafkaAdminClient.java:1264) at java.base/java.lang.Thread.run(Thread.java:829)