CSS files not found (quill.snow.css, quill.bubble.css, datepicker.min.css) after upgrading to v13


I’ve upgraded to v13, but now some CSS files are not found anymore when I access the main site (not desk):

GET https://*********/files/website_theme/quill/dist/quill.snow.css
[HTTP/1.1 404 NOT FOUND 932ms]

GET https://*********/files/website_theme/quill/dist/quill.bubble.css
[HTTP/1.1 404 NOT FOUND 827ms]

GET https://*********/files/website_theme/air-datepicker/dist/css/datepicker.min.css
[HTTP/1.1 404 NOT FOUND 850ms]

Because of this the date picker in my web forms is not working anymore.

Any ideas how to solve this?

any fix of this…
it happened after just update to
ERPNext: v13.1.0 (version-13)
Frappe Framework: v13.1.0 (version-13)

before it was absolutely fine. with v13 previous versions

I’ve created an issue: https://github.com/frappe/erpnext/issues/25502