Bad Request (#400) Unable to verify your data submission

Facing this issue in everything when I try to update articles, users or anything from the backend.

This issue started only after i moved the contents of frontend/web to the root and backend/web to a new folder admin on a shared host.

I put

public $enableCsrfValidation = false;

in the controller and tht clears out this error but I am not sure if I want to do this on each controller now. Any suggestions or help?

I’d not disable CSRF protection since it could lead to security issues.