It is possible to get is Pivot Table plugin for Kibana 7.8.0?
Thank you for posting your question.
Using the Flexmonster-Kibana plugin is only possible with the specific version combination mentioned on the plugin GitHub repository page:
Later Kibana versions introduced breaking changes, which, together with particular Kibana-incompatible changes in Flexmonster, lead to us suspending further Kibana plugin development.
Nevertheless, the plugin’s code is open and available on the mentioned GitHub repository – you are welcome to use, modify, and adjust it to your needs.
Hope this helps!