sequenced plugin not found: Plugin Name

Hi ,

I have created a custom plugin by following the steps that were provided in the Apigee docs.

But, when I start the microgateway after placing the index file in the plugin folder . I'm getting the below error :-

sequenced plugin not found: "post-call"

I have added the plugin in the sequence of my environment configuration . Also made sure that the plugin is present in the plugins folder .But I'm still getting the above error .

Could you please let me know if I'm missing any other configuration .

Thanks !