Is there any guidelines of developing a grafana app plugin?

i found the template app code in github and deploy as a panel, restart grafana docker container and reload the browser page, that’s a pitty it seems like not working;

is there any docs of custom developing?

Docs in GrafanaLabs is too simple, No any info from this community, really source code as doc;

I know I am late to reply to this but I am only now looking for some documentation guide on something particular. Since you didn’t say what went wrong, I assume you couldn’t find the app on the NavBar. Did you enable it?