Why is Class 'Model_role' not found on a working linux?

Question

ORM

ErrorException [ 1 ]: Class 'Model_role' not found ~ MODPATH/orm/classes/Kohana/ORM.php

ON locale under Windows everything worked.
there is no such file Role.php in Model

Answer 1

SORI, classes are loaded by specifying a class file.,
it was now Everything worked.

Answer 2

Why is Class 'Model_role' not found on a working linux?

Because you do not follow the naming convention of classes and files
Well, respectively, when calling:
$roles = ORM::factory('Role')->find_all();