logstash-filter-aggregate

# bin/logstash-plugin install logstash-filter-aggregate
Validating logstash-filter-aggregate
Installing logstash-filter-aggregate
Plugin version conflict, aborting
ERROR: Installation Aborted, message: Bundler could not find compatible versions for gem "logstash-core-plugin-api":
  In snapshot (Gemfile.lock):
    logstash-core-plugin-api (= 2.1.16)

  In Gemfile:
    logstash-devutils (~> 1.1) java depends on
      logstash-core-plugin-api (~> 2.0) java

    logstash-input-s3 (>= 0) java depends on
      logstash-mixin-aws (>= 0) java depends on
        logstash-core-plugin-api (<= 2.99, >= 1.60) java

    …

    logstash-filter-aggregate (>= 0) java depends on
      logstash-core-plugin-api (~> 1.0) java

    logstash-core-plugin-api (>= 0) java

Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.
Bundler could not find compatible versions for gem "logstash-core":
  In snapshot (Gemfile.lock):
    logstash-core (= 5.0.0.pre.rc1)

  In Gemfile:
    logstash-core-plugin-api (>= 0) java depends on
      logstash-core (= 5.0.0.pre.rc1) java

    logstash-filter-aggregate (>= 0) java depends on
      logstash-core (< 2.0.0, >= 1.4.0) java

    logstash-core (>= 0) java

Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.