Upgrade to 7.5

Dear Friends!
Pelase, Help me, when I upgrade my Elastisearch from 7.4 to 7.5 I have error message in Kibana log:

logstash kibana[1918]: {"type":"log","@timestamp":"2019-12-05T18:11:18Z","tags":["info","migrations"],"pid":1918,"message":"Detected mapping change in "properties.space"

and
Kibana server is not ready yet

Plase, Help me

I have only one node:

curl http://localhost:9200/_cluster/health?pretty
{
"cluster_name" : "elasticsearch",
"status" : "yellow",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 506,
"active_shards" : 506,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_shards" : 483,
"delayed_unassigned_shards" : 0,
"number_of_pending_tasks" : 0,
"number_of_in_flight_fetch" : 0,
"task_max_waiting_in_queue_millis" : 0,
"active_shards_percent_as_number" : 51.162790697674424
}

and version 7.5

curl -XGET 'localhost:9200'
{
"name" : "logstash",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "ZHKFoiR-TmSHxw8Wg9AHAg",
"version" : {
"number" : "7.5.0",
"build_flavor" : "default",
"build_type" : "deb",
"build_hash" : "e9ccaed468e2fac2275a3761849cbee64b39519f",
"build_date" : "2019-11-26T01:06:52.518245Z",
"build_snapshot" : false,
"lucene_version" : "8.3.0",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}

after upgrade from 7.4 to 7.5 I have error in Kibana log:

logstash kibana[5427]: {"type":"log","@timestamp":"2019-12-06T05:08:35Z","tags":["info","migrations"],"pid":5427,"message":"Detected mapping change in "properties.task""}

Please, Help me!
Thank you in advance

We deleted kibana indexes
curl -XDELETE http://localhost:9200/.kibana*
and restart kibana

It works!

Thank you

Yes, It works well after delete the .kibana* indices.

But, all saved objects (sapces, settings, dashboards, visualiations) were deleted. so you must export these all saved objects before do the XDELETE.

How do you export Kibana settings before deleting the .kibana* indices when Kibana cannot start because of thoses bad .kibana* indices?

unfortunately, I have not exported Kibana objects, so I had to create them again

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