Not able to make changes to doctype

Hey,

I am just trying to update the doctype field value from custom web UI and also try out from Bench console and through API but it is not updating.

What may be the issue. I recently noticed the frappe version in develop mode.

I am making the custom application using frappe from scratch.

Followed this documentation.
https://frappeframework.com/docs/user/en/api/document