Collection page not opening in theme editor?

[himansxi]

I cant open the default collection in my theme editor. The home page and product page are opening but the collection page isn't opening in theme editor.

It's stucked here and the theme settings on the left are not loading.

[himansxi]

I am using dawn theme.

I am not using browser extension.

I cleared the cache.

I checked the url collection is loading but the theme settings on the left are not comming.

Its not working in any of my theme in the store.

and console is also showing error of storefront module.