Kibana server is not ready yet

我在kibana启动后，查看其端口5601能够正常显示，但是使用浏览器打开就出现错误，日志错误为：
#日志中的错误：
Jan 21 12:03:02 k8s01 filebeat: 2020-01-21T12:03:02.782+0800#011ERROR#011pipeline/output.go:100#011Failed to connect to backoff(elasticsearch(http://172.20.11.90:9200)): Connection marked as failed because the onConnect callback failed: invalid license found, requires a basic or a valid trial license and received Open source

#elasticsearch.log
[2020-01-21T13:38:47,655][DEBUG][o.e.a.s.m.TransportMasterNodeAction] [k8s01] timed out while retrying [indices:admin/get] after failure (timeout [30s])
#kibana错误日志
Jan 21 13:52:30 k8s01 kibana: {"type":"log","@timestamp":"2020-01-21T05:52:30Z","tags":["warning","plugins","licensing"],"pid":4833,"message":"License information could not be obtained from Elasticsearch for the [data] cluster. TypeError: Cannot use 'in' operator to search for 'type' in null"}
Jan 21 14:25:34 k8s01 filebeat: 2020-01-21T14:25:34.342+0800#011INFO#011[monitoring]#011log/log.go:145#011Non-zero metrics in the last 30s#011{"monitoring": {"metrics": {"beat":{"cpu":{"system":{"ticks":410},"total":{"ticks":1620,"time":{"ms":34},"value":1620},"user":{"ticks":1210,"time":{"ms":34}}},"handles":{"limit":{"hard":4096,"soft":1024},"open":9},"info":{"ephemeral_id":"75749cff-2a8f-4027-910c-815de08afedf","uptime":{"ms":2312045}},"memstats":{"gc_next":35093664,"memory_alloc":17556544,"memory_total":74108312},"runtime":{"goroutines":28}},"filebeat":{"harvester":{"open_files":1,"running":1}},"libbeat":{"config":{"module":{"running":0}},"output":{"read":{"bytes":815},"write":{"bytes":266}},"pipeline":{"clients":1,"events":{"active":4117,"retry":50}}},"registrar":{"states":{"current":1}},"system":{"load":{"1":0,"15":0.05,"5":0.01,"norm":{"1":0,"15":0.0083,"5":0.0017}}}}}}