Generally I need to install a plugin aggregate for logstash in a remote server to use it in my file .config to inject data in elasticsearch.
the problem is that I can't download directly the aggregate plugin using the command ./logstash-plugin install logstash-filter-aggregate because I can't acces to internet.
that's why I choose the offline method in my local computer (windows) and send the plugin to the remote server via FTP.
I used the command ./logstash-plugin prepare-offline-pack logstash-filter-aggregate and it generates a zip for me.
but when I send it to the remote server and I try to install ans then I got the error.
./logstash-plugin install file:logstash-offline-plugins-5.4.0.zip
ERROR: Something went wrong when installing file:logstash-offline-plugins-5.4.0.zip, message: can't convert nil into String