Kibana is not ready in 7.12

[LombardoAndrea195 (andrea lombardo)]

I obtain this error can someone help me?

      kibana           | {"type":"log","@timestamp":"2021-05-31T19:22:13+00:00","tags":["info","savedobjects-service"],"pid":7,"message":"Waiting until all Elasticsearch nodes are compatible with Kibana before starting saved objects migrations..."}
       kibana           | {"type":"log","@timestamp":"2021-05-31T19:22:14+00:00","tags":["error","elasticsearch"],"pid":7,"message":"Request error, retrying\nGET http://elasticsearch:9200/_xpack?accept_enterprise=true => connect ECONNREFUSED 172.26.0.3:9200"}
        kibana           | {"type":"log","@timestamp":"2021-05-31T19:22:14+00:00","tags":["warning","elasticsearch"],"pid":7,"message":"Unable to revive connection: http://elasticsearch:9200/"}
        kibana           | {"type":"log","@timestamp":"2021-05-31T19:22:14+00:00","tags":["warning","elasticsearch"],"pid":7,"message":"No living connections"}
        kibana           | {"type":"log","@timestamp":"2021-05-31T19:22:14+00:00","tags":["warning","plugins","licensing"],"pid":7,"message":"License information could not be obtained from Elasticsearch due to Error: No Living connections error"}
       kibana           | {"type":"log","@timestamp":"2021-05-31T19:22:14+00:00","tags":["warning","plugins","monitoring","monitoring"],"pid":7,"message":"X-Pack Monitoring Cluster Alerts will not be available: No Living connections"}
       kibana           | {"type":"log","@timestamp":"2021-05-31T19:22:14+00:00","tags":["error","savedobjects-service"],"pid":7,"message":"Unable to retrieve version information from Elasticsearch nodes."}

[warkolm (Mark Walkom)]

Looks like it cannot connect to Elasticsearch. Have you confirmed it's up and running at elasticsearch:9200?

[LombardoAndrea195 (andrea lombardo)]

Yes. The problem I think is related on .kibana _doc . In fact I stop kibana. And Everything works well. The problem is on saved_object. I should be able to remouve the kibana doc. in order to treat is as new. I've on it only one dashboard with 10 visalization created through altair. After the import if I insert more than 10 plot I obtain the crash on kibana. Kibana is not more able to power up. Do you know a way for delecting through curl the dashboard?