How to solve the "Section Feed does not have the necessary permissions" error?
This error can be visible on the theme editor if you have not specified enough permissions when linking your Instagram account:
In order to solve this issue, open the app Section Feed, disconnect your Instagram account, and make sure to re-connect it. However, make sure that, this time, you do not uncheck the "Access your media" box (otherwise, the app won't be able to access your images):