Hello, I am getting the following error when I try to generate excel

[hisham Osman]

[Nic Brough -Adaptavist-]

Welcome to the Atlassian Community!

This is what it says it is - you have installed an app, presumably a pdf exporter of some sort (there's several in the marketplace), but not given yourself any access to use it.

You'll need to talk to your admins about getting access to the app.