Getting error on join kubernets workers

[dp4pm]

fatal: [mzworker0.sb]: FAILED! => {"changed": true, "cmd": "kubeadm join --token b0f7b8.8d1767876297d85c --discovery-token-unsafe-skip-ca-verification 10.10.10.86:6443\n", "delta": "0:05:00.323697", "end": "2021-11-27 10:16:17.469091", "msg": "non-zero return code", "rc": 1, "start": "2021-11-27 10:11:17.145394", "stderr": "error execution phase preflight: couldn't validate the identity of the API Server: Get "https://xx.xx.xx.xx:6443/api/v1/namespaces/kube-public/configmaps/cluster-info?timeout=10s\": dial tcp xx.xx.xx.xx:6443: connect: connection refused\nTo see the stack trace of this error execute with --v=5 or higher", "stderr_lines": ["error execution phase preflight: couldn't validate the identity of the API Server: Get "https://xx.xx.xx.xx:6443/api/v1/namespaces/kube-public/configmaps/cluster-info?timeout=10s": dial tcp xx.xx.xx.xx:6443: connect: connection refused", "To see the stack trace of this error execute with --v=5 or higher"], "stdout": "[preflight] Running pre-flight checks", "stdout_lines": ["[preflight] Running pre-flight checks"]}