On laravel 10 site at some moment localization in blade files stopped working
and I do not understand why?

Say in top of the blade.php file I have line:

<hr>
START::{{ __('home.start') }};;
<hr>

and in the browser I see :

START::home.start;;

in file ProjectPath/lang/en/home.php
there are lines :

<?php

return [


    'options' => 'options',
    'option' => 'option',
    'start' => 'startAAA',

But why valid labels are not rendered ? Any hints how to check/debug it ?
A had several lang files and they all worked ok – till some moment. After that none of them works properly.

"laravel/framework": "^10.48.17",

Thanks in advance!