I am new to Shopify and I'm trying to setup Shopify themekit locally.
I have created an private app and setup my store, but while trying to access store using theme kit I get this error:
Errors: [API] This action requires merchant approval for write_themes scope.
Private apps have limited permissions like public apps do. You can fix your app's permissions by opening the private apps section of the admin and tapping on the name of your app.
Scroll down to the section labelled ADMIN API PERMISSIONS and tap on ▼ Review disabled Admin API permissions. Set Theme templates and theme assets to Read and write and then save and it should work.