Cannot install plugin

[dkanchev]

I've attempted to install the plugin in question but to avail. I tried the following two options:

1. I used the "path.plugins" options in the Logstash yml file. Sadly this option has been deprecated as of Logstash 6.0. We are now running 6.2:

elastic/logstash#6200

Thus, it is not an option to use "path.plugins" to load the plugin.

2. The second method I tried was to build a gem and then install the gem via "bin/logstash-plugin". Sadly, this failed too. I got the following errors:

Validating ./logstash-input-cloudflare-0.9.11.gem
Installing logstash-input-cloudflare
Plugin version conflict, aborting
ERROR: Installation Aborted, message: Bundler could not find compatible versions for gem "logstash-core":
In snapshot (Gemfile.lock):
logstash-core (= 6.2.0)

In Gemfile:
x-pack (= 6.2.0) java depends on
logstash-core (= 6.2.0) java

logstash-input-syslog (>= 0) java depends on
  logstash-filter-grok (>= 0) java depends on
    logstash-core (>= 5.6.0) java

x-pack (= 6.2.0) java depends on
  logstash-core (= 6.2.0) java

logstash-input-cloudflare (= 0.9.11) java depends on
  logstash-core (< 3.0.0, >= 2.0.0) 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.

Any help is appreciated. Please let me know if it is possible to somehow use this plugin. Thanks!