How to Install Advanced Object Search in pimcore

there is a problem while installing advance object search can you help me from the basis how to install it.

Have a look at
https://tecadmin.net/setup-elasticsearch-on-ubuntu/ (for an Ubuntu / Debian host)

As Christian mentioned you have to install ES 6, eg
https://www.elastic.co/de/downloads/past-releases/elasticsearch-6-8-6
The Advanced Object Search does not work with ES7

apt-get install elasticsearch=6.8.6

Configure elasticsearch.yml, e.g. sudo nano /etc/elasticsearch/elasticsearch.yml
See link above (tecadmin)

Enable the service
sudo /bin/systemctl enable elasticsearch.service

Start the service
sudo systemctl start elasticsearch.service

Test installation
curl -X GET "http://localhost:9200/?pretty"

Finally

{
  "name" : "pimcoreNode",
  "cluster_name" : "pimcoreCluster",
  "cluster_uuid" : "rqMLHK1gRw667n6sqwa1zw",
  "version" : {
    "number" : "6.8.6",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "3d9f765",
    "build_date" : "2019-12-13T17:11:52.013738Z",
    "build_snapshot" : false,
    "lucene_version" : "7.7.2",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

Then you can install the plugin

composer require pimcore/advanced-object-search

Finally you have to configure this file!

Finally call Pimcore command advanced-object-search:update-mapping for creating mappings and advanced-object-search:re-index for indexing data for the first time.

Cheers
Markus