Error on activating CSRF protection

My problem is that I modified the "views/errors/error_general.php" to dynamize reporting responses getting variables from CI instance, then, someway, the error response from CSRF protection become misconfigured.

Apparently, this file can not see CI instance, so it is not possible to use instance references in it.

This was fixed by returning the file "views/errors/error_general.php" to the original version, but I'm still studying ways to customize it.

Thanks for the attention.