Logstash plugin

Hi! im using opensearch 2.5.0 and I started using the logstash plugin and getting this error:

Pipeline error {:pipeline_id=>“main”, :exception=>#<NoMethodError: undefined method scheme' for "localhost":String>, :backtrace=>["/usr/share/logstash/vendor/bundle/jruby/2.6.0/gems/logstash-output-opensearch-2.0.1-java/lib/logstash/outputs/opensearch/http_client_builder.rb:123:in block in setup_ssl’", “org/jruby/RubyArray.java:4728:in any?'", "/usr/share/logstash/vendor/bundle/jruby/2.6.0/gems/logstash-output-opensearch-2.0.1-java/lib/logstash/outputs/opensearch/http_client_builder.rb:123:in setup_ssl’”, “/usr/share/logstash/vendor/bundle/jruby/2.6.0/gems/logstash-output-opensearch-2.0.1-java/lib/logstash/outputs/opensearch/http_client_builder.rb:70:in build'", "/usr/share/logstash/vendor/bundle/jruby/2.6.0/gems/logstash-output-opensearch-2.0.1-java/lib/logstash/plugin_mixins/opensearch/common.rb:38:in build_client’”, “/usr/share/logstash/vendor/bundle/jruby/2.6.0/gems/logstash-output-opensearch-2.0.1-java/lib/logstash/outputs/opensearch.rb:227:in register'", "org/logstash/config/ir/compiler/AbstractOutputDelegatorExt.java:68:in register’”, “/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:234:in block in register_plugins'", "org/jruby/RubyArray.java:1865:in each’”, “/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:233:in register_plugins'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:600:in maybe_setup_out_plugins’”, “/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:246:in start_workers'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:191:in run’”, “/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:143:in `block in start’”]

@taltsafrir Hey, have you checked if your version of ruby-gem compatible with Logstash and Opensearch which you send your data to?
Is it installed properly?
Have you disabled pipeline.ecs_compatibility in logstash.yml before sending logs to your opensearch cluster?

Can you share your configuration files regarding Logstash? Such as logstash.yml and your pipeline.conf in logstash/conf.d/