td-agent won't start

[adamthedeveloper]

config error file="/etc/td-agent/td-agent.conf" error_class=Fluent::ConfigError error="Unknown input plugin 'http_puma'. Run 'gem search -rd fluent-plugin' to find plugins"

$ sudo fluent-gem list | grep puma
fluent-plugin-http-puma (0.0.2)
puma (3.12.0, 3.10.0, 2.9.2)

$ sudo /opt/td-agent/embedded/bin/gem list | grep puma
fluent-plugin-http-puma (0.0.2)
puma (3.12.0, 3.10.0, 2.9.2)

$ sudo gem list | grep puma
fluent-plugin-http-puma (0.0.2)
puma (3.12.0, 3.10.0, 2.9.2)

As you can see, I've attempted to install it in every way I can but the above error appears in my log and td-agent will not start.

Let me know if I can offer any more help.