error_class=Fluent::ConfigError error="Unknown input plugin 'beats'.

[vivekguptacse]

Hi configured beats plugin in td-agent.conf file and when trying to start the td-agent , it is throwing below error ,

Configuration :

@type beats metadata_as_tag

Error in td-log :
2020-01-10 12:31:37 +0530 [info]: parsing config file is succeeded path="/etc/td-agent/td-agent.conf"
2020-01-10 12:31:38 +0530 [warn]: To prevent events traffic jam, you should specify 2 or more 'flush_thread_count'.
2020-01-10 12:31:38 +0530 [error]: config error file="/etc/td-agent/td-agent.conf" error_class=Fluent::ConfigError error="Unknown input plugin 'beats'. Run 'gem search -rd fluent-plugin' to find plugins"

What configuration I am missing ?