Clientip field is not identified by logstash (Solved)

Elastic Stack Logstash
12

All right.
Thank you very much for your help and attention.

Final syntax for Logstash filter plugin

filter {
          if [type] == "apache-error" {
            grok {
                      match => ["message", "\[%{WORD:dayname} %{WORD:month} %{DATA:day} %{DATA:hour}:%{DATA:minute}:%{DATA:second} %{YEAR:year}\] \[%{NOTSPACE:loglevel}\] \[pid \d+:tid \d+\] \[client %{IP:clientip}:\d+\] %{GREEDYDATA:message}"]

                     overwrite => [ "message" ]
                }

            mutate {
                     convert => [ "[geoip][coordinates]", "float"]
                     add_field => {
                                     "time_stamp" => "%{day}/%{month}/%{year}:%{hour}:%{minute}:%{second}"
                                    }
                  }

            geoip {
                   source => "clientip"
                   target => "geoip"
                   add_tag => [ "apache-geoip" ]
                   database => "/etc/logstash/GeoLiteCity.dat"
                   add_field => [ "[geoip][coordinates]", "%{[geoip][longitude]}" ]
                   add_field => [ "[geoip][coordinates]", "%{[geoip][latitude]}"  ]
                 }

            date {
                 match => ["time_stamp", "dd/MMM/YYYY:HH:mm:ss"]
                 remove_field => [ "time_stamp","day","dayname","month","hour","minute","second","year"]
               }
   }
}